11920274149 has 24 divisors (see below), whose sum is σ = 14959190808. Its totient is φ = 9434880000.

The previous prime is 11920274143. The next prime is 11920274161. The reversal of 11920274149 is 94147202911.

It can be written as a sum of positive squares in 4 ways, for example, as 4417596225 + 7502677924 = 66465^2 + 86618^2 .

It is not a de Polignac number, because 11920274149 - 2³³ = 3330339557 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11920274143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90852 + ... + 179149.

It is an arithmetic number, because the mean of its divisors is an integer number (623299617).

Almost surely, 2^11920274149 is an apocalyptic number.

It is an amenable number.

11920274149 is a deficient number, since it is larger than the sum of its proper divisors (3038916659).

11920274149 is a wasteful number, since it uses less digits than its factorization.

11920274149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270085 (or 270078 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 11920274149 in words is "eleven billion, nine hundred twenty million, two hundred seventy-four thousand, one hundred forty-nine".