3915432013 has 4 divisors (see below), whose sum is σ = 4050446940. Its totient is φ = 3780417088.

The previous prime is 3915431987. The next prime is 3915432043. The reversal of 3915432013 is 3102345193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3102345193 = 4663 ⋅665311.

It can be written as a sum of positive squares in 2 ways, for example, as 3255044809 + 660387204 = 57053^2 + 25698^2 .

It is a cyclic number.

It is not a de Polignac number, because 3915432013 - 2¹⁷ = 3915300941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3915432043) 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 3 ways as a sum of consecutive naturals, for example, 67507420 + ... + 67507477.

It is an arithmetic number, because the mean of its divisors is an integer number (1012611735).

Almost surely, 2^3915432013 is an apocalyptic number.

It is an amenable number.

3915432013 is a deficient number, since it is larger than the sum of its proper divisors (135014927).

3915432013 is a wasteful number, since it uses less digits than its factorization.

3915432013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135014926.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 3915432013 is about 62573.4129882652. The cubic root of 3915432013 is about 1576.1343319849.

The spelling of 3915432013 in words is "three billion, nine hundred fifteen million, four hundred thirty-two thousand, thirteen".