1461757397 has 2 divisors, whose sum is σ = 1461757398. Its totient is φ = 1461757396.

The previous prime is 1461757333. The next prime is 1461757447. The reversal of 1461757397 is 7937571641.

It is an a-pointer prime, because the next prime (1461757447) can be obtained adding 1461757397 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1363529476 + 98227921 = 36926^2 + 9911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461757397 - 2⁶ = 1461757333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1461757307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730878698 + 730878699.

It is an arithmetic number, because the mean of its divisors is an integer number (730878699).

Almost surely, 2^1461757397 is an apocalyptic number.

It is an amenable number.

1461757397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461757397 is an equidigital number, since it uses as much as digits as its factorization.

1461757397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 50.

The square root of 1461757397 is about 38232.9360238002. The cubic root of 1461757397 is about 1134.9021882629.

The spelling of 1461757397 in words is "one billion, four hundred sixty-one million, seven hundred fifty-seven thousand, three hundred ninety-seven".