1927011157 has 2 divisors, whose sum is σ = 1927011158. Its totient is φ = 1927011156.

The previous prime is 1927011143. The next prime is 1927011161. The reversal of 1927011157 is 7511107291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1039030756 + 887980401 = 32234^2 + 29799^2 .

It is an emirp because it is prime and its reverse (7511107291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1927011157 - 2²³ = 1918622549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1927011137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963505578 + 963505579.

It is an arithmetic number, because the mean of its divisors is an integer number (963505579).

Almost surely, 2^1927011157 is an apocalyptic number.

It is an amenable number.

1927011157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1927011157 is an equidigital number, since it uses as much as digits as its factorization.

1927011157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 34.

The square root of 1927011157 is about 43897.7352149288. The cubic root of 1927011157 is about 1244.4040323272.

The spelling of 1927011157 in words is "one billion, nine hundred twenty-seven million, eleven thousand, one hundred fifty-seven".