1591401952 has 96 divisors (see below), whose sum is σ = 3710085120. Its totient is φ = 657807360.

The previous prime is 1591401949. The next prime is 1591401967. The reversal of 1591401952 is 2591041951.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 746424 + ... + 748552.

It is an arithmetic number, because the mean of its divisors is an integer number (38646720).

Almost surely, 2^1591401952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1591401952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855042560).

1591401952 is an abundant number, since it is smaller than the sum of its proper divisors (2118683168).

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

1591401952 is a wasteful number, since it uses less digits than its factorization.

1591401952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 1591401952 is about 39892.3796231812. The cubic root of 1591401952 is about 1167.5082608198.

The spelling of 1591401952 in words is "one billion, five hundred ninety-one million, four hundred one thousand, nine hundred fifty-two".