3895136642 has 8 divisors (see below), whose sum is σ = 5845535100. Its totient is φ = 1946624944.

The previous prime is 3895136627. The next prime is 3895136647. The reversal of 3895136642 is 2466315983.

It can be written as a sum of positive squares in 2 ways, for example, as 3895132921 + 3721 = 62411^2 + 61^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3895136647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466517 + ... + 474792.

Almost surely, 2^3895136642 is an apocalyptic number.

3895136642 is a deficient number, since it is larger than the sum of its proper divisors (1950398458).

3895136642 is a wasteful number, since it uses less digits than its factorization.

3895136642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943380.

The product of its digits is 933120, while the sum is 47.

The square root of 3895136642 is about 62411.0298104430. The cubic root of 3895136642 is about 1573.4063520147.

The spelling of 3895136642 in words is "three billion, eight hundred ninety-five million, one hundred thirty-six thousand, six hundred forty-two".