1201092157 has 2 divisors, whose sum is σ = 1201092158. Its totient is φ = 1201092156.

The previous prime is 1201092149. The next prime is 1201092169. The reversal of 1201092157 is 7512901021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061521561 + 139570596 = 32581^2 + 11814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201092157 - 2³ = 1201092149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201095157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600546078 + 600546079.

It is an arithmetic number, because the mean of its divisors is an integer number (600546079).

Almost surely, 2^1201092157 is an apocalyptic number.

It is an amenable number.

1201092157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201092157 is an equidigital number, since it uses as much as digits as its factorization.

1201092157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1201092157 is about 34656.7764946482. The cubic root of 1201092157 is about 1062.9808575372.

Adding to 1201092157 its reverse (7512901021), we get a palindrome (8713993178).

The spelling of 1201092157 in words is "one billion, two hundred one million, ninety-two thousand, one hundred fifty-seven".