3921254520 has 32 divisors (see below), whose sum is σ = 11763763920. Its totient is φ = 1045667840.

The previous prime is 3921254497. The next prime is 3921254543. The reversal of 3921254520 is 254521293.

It is an interprime number because it is at equal distance from previous prime (3921254497) and next prime (3921254543).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16338441 + ... + 16338680.

Almost surely, 2^3921254520 is an apocalyptic number.

3921254520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3921254520 is an abundant number, since it is smaller than the sum of its proper divisors (7842509400).

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

3921254520 is a wasteful number, since it uses less digits than its factorization.

3921254520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32677135 (or 32677131 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 3921254520 is about 62619.9211114163. The cubic root of 3921254520 is about 1576.9152171203.

The spelling of 3921254520 in words is "three billion, nine hundred twenty-one million, two hundred fifty-four thousand, five hundred twenty".