1180401955 has 16 divisors (see below), whose sum is σ = 1456017120. Its totient is φ = 918281728.

The previous prime is 1180401899. The next prime is 1180401991. The reversal of 1180401955 is 5591040811.

It is a cyclic number.

It is not a de Polignac number, because 1180401955 - 2²⁹ = 643531043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1180401955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10236 + ... + 49654.

It is an arithmetic number, because the mean of its divisors is an integer number (91001070).

Almost surely, 2^1180401955 is an apocalyptic number.

1180401955 is a deficient number, since it is larger than the sum of its proper divisors (275615165).

1180401955 is a wasteful number, since it uses less digits than its factorization.

1180401955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39590.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 1180401955 is about 34356.9782576990. The cubic root of 1180401955 is about 1056.8417788160.

The spelling of 1180401955 in words is "one billion, one hundred eighty million, four hundred one thousand, nine hundred fifty-five".