7149157940 has 12 divisors (see below), whose sum is σ = 15013231716. Its totient is φ = 2859663168.

The previous prime is 7149157937. The next prime is 7149157957. The reversal of 7149157940 is 497519417.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4328060944 + 2821096996 = 65788^2 + 53114^2 .

It is a super-2 number, since 2×7149157940² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178728929 + ... + 178728968.

It is an arithmetic number, because the mean of its divisors is an integer number (1251102643).

Almost surely, 2^7149157940 is an apocalyptic number.

It is an amenable number.

7149157940 is an abundant number, since it is smaller than the sum of its proper divisors (7864073776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7149157940 is a wasteful number, since it uses less digits than its factorization.

7149157940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357457906 (or 357457904 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 7149157940 is about 84552.6932746675. The cubic root of 7149157940 is about 1926.4228926671.

The spelling of 7149157940 in words is "seven billion, one hundred forty-nine million, one hundred fifty-seven thousand, nine hundred forty".