1173361920 has 72 divisors (see below), whose sum is σ = 3747436896. Its totient is φ = 312895488.

The previous prime is 1173361919. The next prime is 1173361921. The reversal of 1173361920 is 291633711.

It is an interprime number because it is at equal distance from previous prime (1173361919) and next prime (1173361921).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173361921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148942 + ... + 156621.

Almost surely, 2^1173361920 is an apocalyptic number.

1173361920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173361920 is an abundant number, since it is smaller than the sum of its proper divisors (2574074976).

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

1173361920 is an equidigital number, since it uses as much as digits as its factorization.

1173361920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305587 (or 305573 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1173361920 is about 34254.3708159995. The cubic root of 1173361920 is about 1054.7365513955.

The spelling of 1173361920 in words is "one billion, one hundred seventy-three million, three hundred sixty-one thousand, nine hundred twenty".