74876909389 has 2 divisors, whose sum is σ = 74876909390. Its totient is φ = 74876909388.

The previous prime is 74876909383. The next prime is 74876909441. The reversal of 74876909389 is 98390967847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46447577289 + 28429332100 = 215517^2 + 168610^2 .

It is a cyclic number.

It is not a de Polignac number, because 74876909389 - 2⁹ = 74876908877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74876909383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37438454694 + 37438454695.

It is an arithmetic number, because the mean of its divisors is an integer number (37438454695).

Almost surely, 2^74876909389 is an apocalyptic number.

It is an amenable number.

74876909389 is a deficient number, since it is larger than the sum of its proper divisors (1).

74876909389 is an equidigital number, since it uses as much as digits as its factorization.

74876909389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 74876909389 in words is "seventy-four billion, eight hundred seventy-six million, nine hundred nine thousand, three hundred eighty-nine".