1120172691 has 16 divisors (see below), whose sum is σ = 1641241728. Its totient is φ = 673934400.

The previous prime is 1120172681. The next prime is 1120172717. The reversal of 1120172691 is 1962710211.

It is not a de Polignac number, because 1120172691 - 2⁵ = 1120172659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120172671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119365 + ... + 128406.

It is an arithmetic number, because the mean of its divisors is an integer number (102577608).

Almost surely, 2^1120172691 is an apocalyptic number.

1120172691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1120172691 is a deficient number, since it is larger than the sum of its proper divisors (521069037).

1120172691 is a wasteful number, since it uses less digits than its factorization.

1120172691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247922.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 1120172691 is about 33468.9810272138. The cubic root of 1120172691 is about 1038.5521924486.

The spelling of 1120172691 in words is "one billion, one hundred twenty million, one hundred seventy-two thousand, six hundred ninety-one".