1638452095 has 32 divisors (see below), whose sum is σ = 2383406208. Its totient is φ = 1055551488.

The previous prime is 1638452087. The next prime is 1638452107. The reversal of 1638452095 is 5902548361.

It is not a de Polignac number, because 1638452095 - 2³ = 1638452087 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, 386427 + ... + 390643.

It is an arithmetic number, because the mean of its divisors is an integer number (74481444).

Almost surely, 2^1638452095 is an apocalyptic number.

1638452095 is a deficient number, since it is larger than the sum of its proper divisors (744954113).

1638452095 is a wasteful number, since it uses less digits than its factorization.

1638452095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 1638452095 is about 40477.7975561912. The cubic root of 1638452095 is about 1178.9025741995.

The spelling of 1638452095 in words is "one billion, six hundred thirty-eight million, four hundred fifty-two thousand, ninety-five".