189690707969 has 4 divisors (see below), whose sum is σ = 216789380544. Its totient is φ = 162592035396.

The previous prime is 189690707951. The next prime is 189690707971. The reversal of 189690707969 is 969707096981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 969707096981 = 7 ⋅138529585283.

It is a de Polignac number, because none of the positive numbers 2^k-189690707969 is a prime.

It is a super-2 number, since 2×189690707969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189690707939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13549336277 + ... + 13549336290.

It is an arithmetic number, because the mean of its divisors is an integer number (54197345136).

Almost surely, 2^189690707969 is an apocalyptic number.

It is an amenable number.

189690707969 is a deficient number, since it is larger than the sum of its proper divisors (27098672575).

189690707969 is an equidigital number, since it uses as much as digits as its factorization.

189690707969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27098672574.

The product of its (nonzero) digits is 92588832, while the sum is 71.

The spelling of 189690707969 in words is "one hundred eighty-nine billion, six hundred ninety million, seven hundred seven thousand, nine hundred sixty-nine".