1457789401 has 2 divisors, whose sum is σ = 1457789402. Its totient is φ = 1457789400.

The previous prime is 1457789393. The next prime is 1457789447. The reversal of 1457789401 is 1049877541.

It is a happy number.

It is an a-pointer prime, because the next prime (1457789447) can be obtained adding 1457789401 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367520400 + 90269001 = 36980^2 + 9501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457789401 - 2³ = 1457789393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1457729401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728894700 + 728894701.

It is an arithmetic number, because the mean of its divisors is an integer number (728894701).

Almost surely, 2^1457789401 is an apocalyptic number.

It is an amenable number.

1457789401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457789401 is an equidigital number, since it uses as much as digits as its factorization.

1457789401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 1457789401 is about 38181.0083811311. The cubic root of 1457789401 is about 1133.8743459569.

The spelling of 1457789401 in words is "one billion, four hundred fifty-seven million, seven hundred eighty-nine thousand, four hundred one".