1478863957 has 2 divisors, whose sum is σ = 1478863958. Its totient is φ = 1478863956.

The previous prime is 1478863921. The next prime is 1478863979. The reversal of 1478863957 is 7593688741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1477710481 + 1153476 = 38441^2 + 1074^2 .

It is a cyclic number.

It is not a de Polignac number, because 1478863957 - 2⁷ = 1478863829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1478863987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739431978 + 739431979.

It is an arithmetic number, because the mean of its divisors is an integer number (739431979).

Almost surely, 2^1478863957 is an apocalyptic number.

It is an amenable number.

1478863957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478863957 is an equidigital number, since it uses as much as digits as its factorization.

1478863957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The square root of 1478863957 is about 38456.0002730393. Note that the first 3 decimals coincide. The cubic root of 1478863957 is about 1139.3121830692.

The spelling of 1478863957 in words is "one billion, four hundred seventy-eight million, eight hundred sixty-three thousand, nine hundred fifty-seven".