1177400091 has 16 divisors (see below), whose sum is σ = 1795059200. Its totient is φ = 672452928.

The previous prime is 1177400053. The next prime is 1177400099. The reversal of 1177400091 is 1900047711.

1177400091 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1177400091 - 2¹⁸ = 1177137947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1177400099) 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, 30450 + ... + 57288.

It is an arithmetic number, because the mean of its divisors is an integer number (112191200).

Almost surely, 2^1177400091 is an apocalyptic number.

1177400091 is a deficient number, since it is larger than the sum of its proper divisors (617659109).

1177400091 is a wasteful number, since it uses less digits than its factorization.

1177400091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28938.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 1177400091 is about 34313.2640679956. The cubic root of 1177400091 is about 1055.9451383703.

The spelling of 1177400091 in words is "one billion, one hundred seventy-seven million, four hundred thousand, ninety-one".