2389712690 has 16 divisors (see below), whose sum is σ = 4305903192. Its totient is φ = 954902784.

The previous prime is 2389712657. The next prime is 2389712693. The reversal of 2389712690 is 962179832.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2385247921 + 4464769 = 48839^2 + 2113^2 .

It is a super-2 number, since 2×2389712690² = 11421453481494072200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2389712693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112529 + ... + 132068.

Almost surely, 2^2389712690 is an apocalyptic number.

2389712690 is a deficient number, since it is larger than the sum of its proper divisors (1916190502).

2389712690 is a wasteful number, since it uses less digits than its factorization.

2389712690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245581.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 2389712690 is about 48884.6876843864. The cubic root of 2389712690 is about 1336.9501981093.

The spelling of 2389712690 in words is "two billion, three hundred eighty-nine million, seven hundred twelve thousand, six hundred ninety".