3781495690 has 32 divisors (see below), whose sum is σ = 7789795200. Its totient is φ = 1294726464.

The previous prime is 3781495643. The next prime is 3781495699. The reversal of 3781495690 is 965941873.

It is a happy number.

It is a super-2 number, since 2×3781495690² = 28599419306977152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3781495699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14461 + ... + 88159.

It is an arithmetic number, because the mean of its divisors is an integer number (243431100).

Almost surely, 2^3781495690 is an apocalyptic number.

3781495690 is an abundant number, since it is smaller than the sum of its proper divisors (4008299510).

3781495690 is a wasteful number, since it uses less digits than its factorization.

3781495690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74446.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 3781495690 is about 61493.8670925809. The cubic root of 3781495690 is about 1557.9536627612.

The spelling of 3781495690 in words is "three billion, seven hundred eighty-one million, four hundred ninety-five thousand, six hundred ninety".