1457890261 has 2 divisors, whose sum is σ = 1457890262. Its totient is φ = 1457890260.

The previous prime is 1457890237. The next prime is 1457890279. The reversal of 1457890261 is 1620987541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1427706225 + 30184036 = 37785^2 + 5494^2 .

It is an emirp because it is prime and its reverse (1620987541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1457890261 - 2²⁷ = 1323672533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1457890061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728945130 + 728945131.

It is an arithmetic number, because the mean of its divisors is an integer number (728945131).

Almost surely, 2^1457890261 is an apocalyptic number.

It is an amenable number.

1457890261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457890261 is an equidigital number, since it uses as much as digits as its factorization.

1457890261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1457890261 is about 38182.3291720136. The cubic root of 1457890261 is about 1133.9004951224.

The spelling of 1457890261 in words is "one billion, four hundred fifty-seven million, eight hundred ninety thousand, two hundred sixty-one".