1492319861 has 2 divisors, whose sum is σ = 1492319862. Its totient is φ = 1492319860.

The previous prime is 1492319821. The next prime is 1492319893. The reversal of 1492319861 is 1689132941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127280625 + 365039236 = 33575^2 + 19106^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492319861 - 2⁶ = 1492319797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1492319821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746159930 + 746159931.

It is an arithmetic number, because the mean of its divisors is an integer number (746159931).

Almost surely, 2^1492319861 is an apocalyptic number.

It is an amenable number.

1492319861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1492319861 is an equidigital number, since it uses as much as digits as its factorization.

1492319861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 1492319861 is about 38630.5560534663. The cubic root of 1492319861 is about 1142.7572176941.

The spelling of 1492319861 in words is "one billion, four hundred ninety-two million, three hundred nineteen thousand, eight hundred sixty-one".