1621000152 has 24 divisors (see below), whose sum is σ = 4390208940. Its totient is φ = 540333360.

The previous prime is 1621000151. The next prime is 1621000169. The reversal of 1621000152 is 2510001261.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621000151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11256874 + ... + 11257017.

Almost surely, 2^1621000152 is an apocalyptic number.

1621000152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1621000152 is an abundant number, since it is smaller than the sum of its proper divisors (2769208788).

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

1621000152 is a wasteful number, since it uses less digits than its factorization.

1621000152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22513903 (or 22513896 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1621000152 is about 40261.6461660474. The cubic root of 1621000152 is about 1174.7019378571.

The spelling of 1621000152 in words is "one billion, six hundred twenty-one million, one hundred fifty-two", and thus it is an aban number.