7978650195 has 32 divisors (see below), whose sum is σ = 12924956160. Its totient is φ = 4202359040.

The previous prime is 7978650161. The next prime is 7978650209. The reversal of 7978650195 is 5910568797.

It is not a de Polignac number, because 7978650195 - 2²¹ = 7976553043 is a prime.

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, 1261090 + ... + 1267400.

It is an arithmetic number, because the mean of its divisors is an integer number (403904880).

Almost surely, 2^7978650195 is an apocalyptic number.

7978650195 is a deficient number, since it is larger than the sum of its proper divisors (4946305965).

7978650195 is a wasteful number, since it uses less digits than its factorization.

7978650195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355.

The product of its (nonzero) digits is 4762800, while the sum is 57.

The square root of 7978650195 is about 89323.2903278870. The cubic root of 7978650195 is about 1998.2192645445.

The spelling of 7978650195 in words is "seven billion, nine hundred seventy-eight million, six hundred fifty thousand, one hundred ninety-five".