1621013152 has 48 divisors (see below), whose sum is σ = 3485389824. Its totient is φ = 736000000.

The previous prime is 1621013143. The next prime is 1621013153. The reversal of 1621013152 is 2513101261.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1621013153) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 403152 + ... + 407152.

It is an arithmetic number, because the mean of its divisors is an integer number (72612288).

Almost surely, 2^1621013152 is an apocalyptic number.

It is an amenable number.

1621013152 is an abundant number, since it is smaller than the sum of its proper divisors (1864376672).

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

1621013152 is a wasteful number, since it uses less digits than its factorization.

1621013152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1621013152 is about 40261.8076096938. The cubic root of 1621013152 is about 1174.7050781168.

The spelling of 1621013152 in words is "one billion, six hundred twenty-one million, thirteen thousand, one hundred fifty-two".