1822074157 has 2 divisors, whose sum is σ = 1822074158. Its totient is φ = 1822074156.

The previous prime is 1822074151. The next prime is 1822074169. The reversal of 1822074157 is 7514702281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1768286601 + 53787556 = 42051^2 + 7334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1822074157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1822074151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911037078 + 911037079.

It is an arithmetic number, because the mean of its divisors is an integer number (911037079).

Almost surely, 2^1822074157 is an apocalyptic number.

It is an amenable number.

1822074157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822074157 is an equidigital number, since it uses as much as digits as its factorization.

1822074157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 1822074157 is about 42685.7605882805. The cubic root of 1822074157 is about 1221.3927829588.

The spelling of 1822074157 in words is "one billion, eight hundred twenty-two million, seventy-four thousand, one hundred fifty-seven".