1155405154 has 16 divisors (see below), whose sum is σ = 1789940736. Its totient is φ = 558777600.

The previous prime is 1155405149. The next prime is 1155405169. The reversal of 1155405154 is 4515045511.

It is a super-2 number, since 2×1155405154² = 2669922139779527432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 162114 + ... + 169090.

It is an arithmetic number, because the mean of its divisors is an integer number (111871296).

Almost surely, 2^1155405154 is an apocalyptic number.

1155405154 is a deficient number, since it is larger than the sum of its proper divisors (634535582).

1155405154 is a wasteful number, since it uses less digits than its factorization.

1155405154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 1155405154 is about 33991.2511390799. The cubic root of 1155405154 is about 1049.3284152898.

The spelling of 1155405154 in words is "one billion, one hundred fifty-five million, four hundred five thousand, one hundred fifty-four".