3681900495 has 128 divisors (see below), whose sum is σ = 8134318080. Its totient is φ = 1538611200.

The previous prime is 3681900493. The next prime is 3681900529. The reversal of 3681900495 is 5940091863.

It is a happy number.

It is not a de Polignac number, because 3681900495 - 2¹ = 3681900493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3681900495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681900493) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1313095 + ... + 1315895.

It is an arithmetic number, because the mean of its divisors is an integer number (63549360).

Almost surely, 2^3681900495 is an apocalyptic number.

3681900495 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3681900495 is an abundant number, since it is smaller than the sum of its proper divisors (4452417585).

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

3681900495 is a wasteful number, since it uses less digits than its factorization.

3681900495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942 (or 2936 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 3681900495 is about 60678.6658966724. The cubic root of 3681900495 is about 1544.1542548094.

The spelling of 3681900495 in words is "three billion, six hundred eighty-one million, nine hundred thousand, four hundred ninety-five".