1072791993 has 32 divisors (see below), whose sum is σ = 1801440256. Its totient is φ = 552702528.

The previous prime is 1072791989. The next prime is 1072792001. The reversal of 1072791993 is 3991972701.

It is a happy number.

It is not a de Polignac number, because 1072791993 - 2² = 1072791989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1072791193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33955 + ... + 57432.

It is an arithmetic number, because the mean of its divisors is an integer number (56295008).

Almost surely, 2^1072791993 is an apocalyptic number.

1072791993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1072791993 is a deficient number, since it is larger than the sum of its proper divisors (728648263).

1072791993 is a wasteful number, since it uses less digits than its factorization.

1072791993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91453.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 1072791993 is about 32753.5035225241. The cubic root of 1072791993 is about 1023.6979677801.

The spelling of 1072791993 in words is "one billion, seventy-two million, seven hundred ninety-one thousand, nine hundred ninety-three".