1621130264 has 16 divisors (see below), whose sum is σ = 3273436320. Its totient is φ = 748213920.

The previous prime is 1621130243. The next prime is 1621130279. The reversal of 1621130264 is 4620311261.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7793792 + ... + 7793999.

It is an arithmetic number, because the mean of its divisors is an integer number (204589770).

Almost surely, 2^1621130264 is an apocalyptic number.

It is an amenable number.

1621130264 is an abundant number, since it is smaller than the sum of its proper divisors (1652306056).

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

1621130264 is a wasteful number, since it uses less digits than its factorization.

1621130264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587810 (or 15587806 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1621130264 is about 40263.2619642274. The cubic root of 1621130264 is about 1174.7333667518.

The spelling of 1621130264 in words is "one billion, six hundred twenty-one million, one hundred thirty thousand, two hundred sixty-four".