1492167661 has 2 divisors, whose sum is σ = 1492167662. Its totient is φ = 1492167660.

The previous prime is 1492167631. The next prime is 1492167713. The reversal of 1492167661 is 1667612941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1482712036 + 9455625 = 38506^2 + 3075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492167661 - 2⁵ = 1492167629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1492167601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746083830 + 746083831.

It is an arithmetic number, because the mean of its divisors is an integer number (746083831).

Almost surely, 2^1492167661 is an apocalyptic number.

It is an amenable number.

1492167661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1492167661 is an equidigital number, since it uses as much as digits as its factorization.

1492167661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 1492167661 is about 38628.5860600670. The cubic root of 1492167661 is about 1142.7183668717.

The spelling of 1492167661 in words is "one billion, four hundred ninety-two million, one hundred sixty-seven thousand, six hundred sixty-one".