1172897530 has 16 divisors (see below), whose sum is σ = 2412817920. Its totient is φ = 402136272.

The previous prime is 1172897503. The next prime is 1172897543. The reversal of 1172897530 is 357982711.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8377770 + ... + 8377909.

It is an arithmetic number, because the mean of its divisors is an integer number (150801120).

Almost surely, 2^1172897530 is an apocalyptic number.

1172897530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1172897530 is an abundant number, since it is smaller than the sum of its proper divisors (1239920390).

1172897530 is a wasteful number, since it uses less digits than its factorization.

1172897530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755693.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1172897530 is about 34247.5915941545. The cubic root of 1172897530 is about 1054.5973861100.

The spelling of 1172897530 in words is "one billion, one hundred seventy-two million, eight hundred ninety-seven thousand, five hundred thirty".