1172004538 has 16 divisors (see below), whose sum is σ = 1815609600. Its totient is φ = 566820000.

The previous prime is 1172004523. The next prime is 1172004551. The reversal of 1172004538 is 8354002711.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 182913 + ... + 189211.

It is an arithmetic number, because the mean of its divisors is an integer number (113475600).

Almost surely, 2^1172004538 is an apocalyptic number.

1172004538 is a deficient number, since it is larger than the sum of its proper divisors (643605062).

1172004538 is a wasteful number, since it uses less digits than its factorization.

1172004538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1172004538 is about 34234.5518153809. The cubic root of 1172004538 is about 1054.3296769801.

The spelling of 1172004538 in words is "one billion, one hundred seventy-two million, four thousand, five hundred thirty-eight".