1478461157 has 2 divisors, whose sum is σ = 1478461158. Its totient is φ = 1478461156.

The previous prime is 1478461123. The next prime is 1478461241. The reversal of 1478461157 is 7511648741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1475635396 + 2825761 = 38414^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1478461157 - 2²⁰ = 1477412581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1478467157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739230578 + 739230579.

It is an arithmetic number, because the mean of its divisors is an integer number (739230579).

Almost surely, 2^1478461157 is an apocalyptic number.

It is an amenable number.

1478461157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478461157 is an equidigital number, since it uses as much as digits as its factorization.

1478461157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 44.

The square root of 1478461157 is about 38450.7627622652. The cubic root of 1478461157 is about 1139.2087350551.

The spelling of 1478461157 in words is "one billion, four hundred seventy-eight million, four hundred sixty-one thousand, one hundred fifty-seven".