1461540697 has 2 divisors, whose sum is σ = 1461540698. Its totient is φ = 1461540696.

The previous prime is 1461540673. The next prime is 1461540701. The reversal of 1461540697 is 7960451641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232290816 + 229249881 = 35104^2 + 15141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461540697 is a prime.

It is a super-2 number, since 2×1461540697² = 4272202417974491618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1461540617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730770348 + 730770349.

It is an arithmetic number, because the mean of its divisors is an integer number (730770349).

Almost surely, 2^1461540697 is an apocalyptic number.

It is an amenable number.

1461540697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461540697 is an equidigital number, since it uses as much as digits as its factorization.

1461540697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1461540697 is about 38230.1019747528. The cubic root of 1461540697 is about 1134.8461038404.

The spelling of 1461540697 in words is "one billion, four hundred sixty-one million, five hundred forty thousand, six hundred ninety-seven".