1997192470 has 96 divisors (see below), whose sum is σ = 4768733088. Its totient is φ = 594865152.

The previous prime is 1997192459. The next prime is 1997192471. The reversal of 1997192470 is 742917991.

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 (1997192471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99069 + ... + 117511.

It is an arithmetic number, because the mean of its divisors is an integer number (49674303).

Almost surely, 2^1997192470 is an apocalyptic number.

1997192470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1997192470 is an abundant number, since it is smaller than the sum of its proper divisors (2771540618).

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

1997192470 is a wasteful number, since it uses less digits than its factorization.

1997192470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18494 (or 18487 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 1997192470 is about 44689.9593868690. The cubic root of 1997192470 is about 1259.3312294614.

The spelling of 1997192470 in words is "one billion, nine hundred ninety-seven million, one hundred ninety-two thousand, four hundred seventy".