1155400494 has 16 divisors (see below), whose sum is σ = 2311770240. Its totient is φ = 384971960.

The previous prime is 1155400457. The next prime is 1155400531. The reversal of 1155400494 is 4940045511.

It is an interprime number because it is at equal distance from previous prime (1155400457) and next prime (1155400531).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24402 + ... + 53909.

It is an arithmetic number, because the mean of its divisors is an integer number (144485640).

Almost surely, 2^1155400494 is an apocalyptic number.

1155400494 is an abundant number, since it is smaller than the sum of its proper divisors (1156369746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155400494 is a wasteful number, since it uses less digits than its factorization.

1155400494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80775.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1155400494 is about 33991.1825919605. The cubic root of 1155400494 is about 1049.3270045647.

The spelling of 1155400494 in words is "one billion, one hundred fifty-five million, four hundred thousand, four hundred ninety-four".