1320155474 has 16 divisors (see below), whose sum is σ = 2212945056. Its totient is φ = 585434400.

The previous prime is 1320155467. The next prime is 1320155477. The reversal of 1320155474 is 4745510231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320155474.

It is not an unprimeable number, because it can be changed into a prime (1320155477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730892 + ... + 732695.

It is an arithmetic number, because the mean of its divisors is an integer number (138309066).

Almost surely, 2^1320155474 is an apocalyptic number.

1320155474 is a deficient number, since it is larger than the sum of its proper divisors (892789582).

1320155474 is a wasteful number, since it uses less digits than its factorization.

1320155474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463641.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1320155474 is about 36333.9438266754. The cubic root of 1320155474 is about 1097.0043767156.

The spelling of 1320155474 in words is "one billion, three hundred twenty million, one hundred fifty-five thousand, four hundred seventy-four".