11951899348 has 12 divisors (see below), whose sum is σ = 20922276340. Its totient is φ = 5974106112.

The previous prime is 11951899343. The next prime is 11951899409. The reversal of 11951899348 is 84399815911.

It can be written as a sum of positive squares in 2 ways, for example, as 9282937104 + 2668962244 = 96348^2 + 51662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11951899292 and 11951899301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11951899343) 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, 446253 + ... + 472276.

Almost surely, 2^11951899348 is an apocalyptic number.

It is an amenable number.

11951899348 is a deficient number, since it is larger than the sum of its proper divisors (8970376992).

11951899348 is a wasteful number, since it uses less digits than its factorization.

11951899348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921786 (or 921784 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 58.

The spelling of 11951899348 in words is "eleven billion, nine hundred fifty-one million, eight hundred ninety-nine thousand, three hundred forty-eight".