11898897965 has 8 divisors (see below), whose sum is σ = 14303005920. Its totient is φ = 9502899472.

The previous prime is 11898897949. The next prime is 11898898003. The reversal of 11898897965 is 56979889811.

11898897965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11898897965 - 2⁴ = 11898897949 is a prime.

It is a super-2 number, since 2×11898897965² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2024135 + ... + 2030004.

It is an arithmetic number, because the mean of its divisors is an integer number (1787875740).

Almost surely, 2^11898897965 is an apocalyptic number.

It is an amenable number.

11898897965 is a deficient number, since it is larger than the sum of its proper divisors (2404107955).

11898897965 is an equidigital number, since it uses as much as digits as its factorization.

11898897965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054731.

The product of its digits is 78382080, while the sum is 71.

The spelling of 11898897965 in words is "eleven billion, eight hundred ninety-eight million, eight hundred ninety-seven thousand, nine hundred sixty-five".