7490901889 has 2 divisors, whose sum is σ = 7490901890. Its totient is φ = 7490901888.

The previous prime is 7490901883. The next prime is 7490901917. The reversal of 7490901889 is 9881090947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7289744400 + 201157489 = 85380^2 + 14183^2 .

It is a cyclic number.

It is not a de Polignac number, because 7490901889 - 2³ = 7490901881 is a prime.

It is a super-2 number, since 2×7490901889² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7490901881) 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 as a sum of consecutive naturals, namely, 3745450944 + 3745450945.

It is an arithmetic number, because the mean of its divisors is an integer number (3745450945).

Almost surely, 2^7490901889 is an apocalyptic number.

It is an amenable number.

7490901889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7490901889 is an equidigital number, since it uses as much as digits as its factorization.

7490901889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 7490901889 is about 86549.9964702483. The cubic root of 7490901889 is about 1956.6419914170.

The spelling of 7490901889 in words is "seven billion, four hundred ninety million, nine hundred one thousand, eight hundred eighty-nine".