3901618391 has 4 divisors (see below), whose sum is σ = 4256310984. Its totient is φ = 3546925800.

The previous prime is 3901618333. The next prime is 3901618393. The reversal of 3901618391 is 1938161093.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3901618391 - 2¹⁸ = 3901356247 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 (3901618393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177346280 + ... + 177346301.

It is an arithmetic number, because the mean of its divisors is an integer number (1064077746).

Almost surely, 2^3901618391 is an apocalyptic number.

3901618391 is a deficient number, since it is larger than the sum of its proper divisors (354692593).

3901618391 is a wasteful number, since it uses less digits than its factorization.

3901618391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354692592.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 3901618391 is about 62462.9361381612. The cubic root of 3901618391 is about 1574.2786169502.

The spelling of 3901618391 in words is "three billion, nine hundred one million, six hundred eighteen thousand, three hundred ninety-one".