7149640390 has 16 divisors (see below), whose sum is σ = 13428890208. Its totient is φ = 2735514496.

The previous prime is 7149640369. The next prime is 7149640451. The reversal of 7149640390 is 930469417.

It is a super-2 number, since 2×7149640390² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15542467 + ... + 15542926.

It is an arithmetic number, because the mean of its divisors is an integer number (839305638).

Almost surely, 2^7149640390 is an apocalyptic number.

7149640390 is a deficient number, since it is larger than the sum of its proper divisors (6279249818).

7149640390 is a wasteful number, since it uses less digits than its factorization.

7149640390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31085423.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 7149640390 is about 84555.5461811938. The cubic root of 7149640390 is about 1926.4662255941.

The spelling of 7149640390 in words is "seven billion, one hundred forty-nine million, six hundred forty thousand, three hundred ninety".