7251949887 has 128 divisors (see below), whose sum is σ = 13237862400. Its totient is φ = 3422352384.

The previous prime is 7251949883. The next prime is 7251949889. The reversal of 7251949887 is 7889491527.

It is not a de Polignac number, because 7251949887 - 2² = 7251949883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7251949887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7251949883) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10617448 + ... + 10618130.

It is an arithmetic number, because the mean of its divisors is an integer number (103420800).

Almost surely, 2^7251949887 is an apocalyptic number.

7251949887 is a deficient number, since it is larger than the sum of its proper divisors (5985912513).

7251949887 is a wasteful number, since it uses less digits than its factorization.

7251949887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837.

The product of its digits is 10160640, while the sum is 60.

The square root of 7251949887 is about 85158.3811905792. The cubic root of 7251949887 is about 1935.6118167618.

The spelling of 7251949887 in words is "seven billion, two hundred fifty-one million, nine hundred forty-nine thousand, eight hundred eighty-seven".