7961020390 has 32 divisors (see below), whose sum is σ = 14524416000. Its totient is φ = 3141242208.

The previous prime is 7961020357. The next prime is 7961020399. The reversal of 7961020390 is 930201697.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7961020399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1006471 + ... + 1014349.

It is an arithmetic number, because the mean of its divisors is an integer number (453888000).

Almost surely, 2^7961020390 is an apocalyptic number.

7961020390 is a deficient number, since it is larger than the sum of its proper divisors (6563395610).

7961020390 is a wasteful number, since it uses less digits than its factorization.

7961020390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9244.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 7961020390 is about 89224.5503771243. The cubic root of 7961020390 is about 1996.7464091100.

It can be divided in two parts, 79610 and 20390, that added together give a 5-th power (100000 = 10⁵).

The spelling of 7961020390 in words is "seven billion, nine hundred sixty-one million, twenty thousand, three hundred ninety".