1197954940 has 240 divisors, whose sum is σ = 3359855520. Its totient is φ = 355622400.

The previous prime is 1197954937. The next prime is 1197954943. The reversal of 1197954940 is 494597911.

It is an interprime number because it is at equal distance from previous prime (1197954937) and next prime (1197954943).

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197954943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11860890 + ... + 11860990.

It is an arithmetic number, because the mean of its divisors is an integer number (13999398).

Almost surely, 2^1197954940 is an apocalyptic number.

1197954940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1197954940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679927760).

1197954940 is an abundant number, since it is smaller than the sum of its proper divisors (2161900580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1197954940 is a wasteful number, since it uses less digits than its factorization.

1197954940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 1197954940 is about 34611.4856658884. The cubic root of 1197954940 is about 1062.0545591164.

The spelling of 1197954940 in words is "one billion, one hundred ninety-seven million, nine hundred fifty-four thousand, nine hundred forty".