7261893990 has 48 divisors (see below), whose sum is σ = 20333306448. Its totient is φ = 1787542848.

The previous prime is 7261893979. The next prime is 7261893997. The reversal of 7261893990 is 993981627.

7261893990 is a `hidden beast` number, since 72 + 6 + 189 + 399 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7261893997) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3102204 + ... + 3104543.

It is an arithmetic number, because the mean of its divisors is an integer number (423610551).

Almost surely, 2^7261893990 is an apocalyptic number.

7261893990 is an abundant number, since it is smaller than the sum of its proper divisors (13071412458).

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

7261893990 is a wasteful number, since it uses less digits than its factorization.

7261893990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206773 (or 6206770 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 7261893990 is about 85216.7471216779. The cubic root of 7261893990 is about 1936.4961367255.

The spelling of 7261893990 in words is "seven billion, two hundred sixty-one million, eight hundred ninety-three thousand, nine hundred ninety".