1137072921 has 8 divisors (see below), whose sum is σ = 1522138464. Its totient is φ = 755028000.

The previous prime is 1137072907. The next prime is 1137072943. The reversal of 1137072921 is 1292707311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1137072921 - 2⁵ = 1137072889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1137072821) 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, 754276 + ... + 755781.

It is an arithmetic number, because the mean of its divisors is an integer number (190267308).

Almost surely, 2^1137072921 is an apocalyptic number.

It is an amenable number.

1137072921 is a deficient number, since it is larger than the sum of its proper divisors (385065543).

1137072921 is a wasteful number, since it uses less digits than its factorization.

1137072921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510311.

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 1137072921 is about 33720.5118733391. The cubic root of 1137072921 is about 1043.7490800140.

The spelling of 1137072921 in words is "one billion, one hundred thirty-seven million, seventy-two thousand, nine hundred twenty-one".