1461213757 has 2 divisors, whose sum is σ = 1461213758. Its totient is φ = 1461213756.

The previous prime is 1461213751. The next prime is 1461213773. The reversal of 1461213757 is 7573121641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 933546916 + 527666841 = 30554^2 + 22971^2 .

It is an emirp because it is prime and its reverse (7573121641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1461213757 - 2⁷ = 1461213629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1461213751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730606878 + 730606879.

It is an arithmetic number, because the mean of its divisors is an integer number (730606879).

Almost surely, 2^1461213757 is an apocalyptic number.

It is an amenable number.

1461213757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461213757 is an equidigital number, since it uses as much as digits as its factorization.

1461213757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 1461213757 is about 38225.8257857172. The cubic root of 1461213757 is about 1134.7614775610.

It can be divided in two parts, 146121 and 3757, that added together give a triangular number (149878 = T₅₄₇).

The spelling of 1461213757 in words is "one billion, four hundred sixty-one million, two hundred thirteen thousand, seven hundred fifty-seven".