11920157 has 2 divisors, whose sum is σ = 11920158. Its totient is φ = 11920156.

The previous prime is 11920123. The next prime is 11920199. The reversal of 11920157 is 75102911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11363641 + 556516 = 3371^2 + 746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11920157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11923157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5960078 + 5960079.

It is an arithmetic number, because the mean of its divisors is an integer number (5960079).

Almost surely, 2^11920157 is an apocalyptic number.

It is an amenable number.

11920157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11920157 is an equidigital number, since it uses as much as digits as its factorization.

11920157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 11920157 is about 3452.5580371661. The cubic root of 11920157 is about 228.4339547402.

The spelling of 11920157 in words is "eleven million, nine hundred twenty thousand, one hundred fifty-seven".