7901912146 has 8 divisors (see below), whose sum is σ = 12076507404. Its totient is φ = 3876409680.

The previous prime is 7901912143. The next prime is 7901912191. The reversal of 7901912146 is 6412191097.

It can be written as a sum of positive squares in 2 ways, for example, as 7452005625 + 449906521 = 86325^2 + 21211^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7901912099 and 7901912108.

It is not an unprimeable number, because it can be changed into a prime (7901912143) 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, 37273065 + ... + 37273276.

Almost surely, 2^7901912146 is an apocalyptic number.

7901912146 is a deficient number, since it is larger than the sum of its proper divisors (4174595258).

7901912146 is a wasteful number, since it uses less digits than its factorization.

7901912146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74546396.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 7901912146 is about 88892.7001839859. The cubic root of 7901912146 is about 1991.7923756939.

The spelling of 7901912146 in words is "seven billion, nine hundred one million, nine hundred twelve thousand, one hundred forty-six".