49151668 has 12 divisors (see below), whose sum is σ = 86064580. Its totient is φ = 24561792.

The previous prime is 49151657. The next prime is 49151693. The reversal of 49151668 is 86615194.

It can be written as a sum of positive squares in 2 ways, for example, as 30935844 + 18215824 = 5562^2 + 4268^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49151668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11398 + ... + 15106.

Almost surely, 2^49151668 is an apocalyptic number.

It is an amenable number.

49151668 is a deficient number, since it is larger than the sum of its proper divisors (36912912).

49151668 is a wasteful number, since it uses less digits than its factorization.

49151668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026 (or 7024 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 49151668 is about 7010.8250584364. The cubic root of 49151668 is about 366.3077328645.

The spelling of 49151668 in words is "forty-nine million, one hundred fifty-one thousand, six hundred sixty-eight".