981692461 has 2 divisors, whose sum is σ = 981692462. Its totient is φ = 981692460.

The previous prime is 981692449. The next prime is 981692471. The reversal of 981692461 is 164296189.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 947469961 + 34222500 = 30781^2 + 5850^2 .

It is a cyclic number.

It is not a de Polignac number, because 981692461 - 2⁵ = 981692429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981692401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490846230 + 490846231.

It is an arithmetic number, because the mean of its divisors is an integer number (490846231).

Almost surely, 2^981692461 is an apocalyptic number.

It is an amenable number.

981692461 is a deficient number, since it is larger than the sum of its proper divisors (1).

981692461 is an equidigital number, since it uses as much as digits as its factorization.

981692461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 981692461 is about 31331.9718658114. The cubic root of 981692461 is about 993.8598628798.

The spelling of 981692461 in words is "nine hundred eighty-one million, six hundred ninety-two thousand, four hundred sixty-one".