78901893 has 12 divisors (see below), whose sum is σ = 130250848. Its totient is φ = 45086760.

The previous prime is 78901843. The next prime is 78901903. The reversal of 78901893 is 39810987.

It is not a de Polignac number, because 78901893 - 2¹⁰ = 78900869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78901843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626143 + ... + 626268.

Almost surely, 2^78901893 is an apocalyptic number.

It is an amenable number.

78901893 is a deficient number, since it is larger than the sum of its proper divisors (51348955).

78901893 is a wasteful number, since it uses less digits than its factorization.

78901893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252424 (or 1252421 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 78901893 is about 8882.6737528742. The cubic root of 78901893 is about 428.9063482467.

The spelling of 78901893 in words is "seventy-eight million, nine hundred one thousand, eight hundred ninety-three".