11891794351 has 16 divisors (see below), whose sum is σ = 12711815424. Its totient is φ = 11097624384.

The previous prime is 11891794337. The next prime is 11891794361. The reversal of 11891794351 is 15349719811.

It is a happy number.

It is not a de Polignac number, because 11891794351 - 2¹⁷ = 11891663279 is a prime.

It is a super-2 number, since 2×11891794351² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11891794295 and 11891794304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11891794361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930235 + ... + 942931.

It is an arithmetic number, because the mean of its divisors is an integer number (794488464).

Almost surely, 2^11891794351 is an apocalyptic number.

11891794351 is a deficient number, since it is larger than the sum of its proper divisors (820021073).

11891794351 is a wasteful number, since it uses less digits than its factorization.

11891794351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710.

The product of its digits is 272160, while the sum is 49.

The spelling of 11891794351 in words is "eleven billion, eight hundred ninety-one million, seven hundred ninety-four thousand, three hundred fifty-one".