3781157027165 has 32 divisors (see below), whose sum is σ = 5256977646336. Its totient is φ = 2557102763520.

The previous prime is 3781157027129. The next prime is 3781157027201. The reversal of 3781157027165 is 5617207511873.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3781157027129) and next prime (3781157027201).

It is not a de Polignac number, because 3781157027165 - 2³⁸ = 3506279120221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46058855 + ... + 46140875.

It is an arithmetic number, because the mean of its divisors is an integer number (164280551448).

Almost surely, 2^{3781157027165} is an apocalyptic number.

3781157027165 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3781157027165 is a deficient number, since it is larger than the sum of its proper divisors (1475820619171).

3781157027165 is a wasteful number, since it uses less digits than its factorization.

3781157027165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100149.

The product of its (nonzero) digits is 2469600, while the sum is 53.

The spelling of 3781157027165 in words is "three trillion, seven hundred eighty-one billion, one hundred fifty-seven million, twenty-seven thousand, one hundred sixty-five".