7149999786 has 32 divisors (see below), whose sum is σ = 14473747008. Its totient is φ = 2354465280.

The previous prime is 7149999767. The next prime is 7149999847. The reversal of 7149999786 is 6879999417.

It is a super-2 number, since 2×7149999786² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7149999786.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316756 + ... + 338576.

It is an arithmetic number, because the mean of its divisors is an integer number (452304594).

Almost surely, 2^7149999786 is an apocalyptic number.

7149999786 is an abundant number, since it is smaller than the sum of its proper divisors (7323747222).

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

7149999786 is a wasteful number, since it uses less digits than its factorization.

7149999786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22486.

The product of its digits is 61725888, while the sum is 69.

The square root of 7149999786 is about 84557.6713610303. The cubic root of 7149999786 is about 1926.4985047307.

The spelling of 7149999786 in words is "seven billion, one hundred forty-nine million, nine hundred ninety-nine thousand, seven hundred eighty-six".