1478162257 has 48 divisors (see below), whose sum is σ = 1869388416. Its totient is φ = 1156953600.

The previous prime is 1478162239. The next prime is 1478162269. The reversal of 1478162257 is 7522618741.

It is not a de Polignac number, because 1478162257 - 2⁷ = 1478162129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1478162237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4465582 + ... + 4465912.

It is an arithmetic number, because the mean of its divisors is an integer number (38945592).

Almost surely, 2^1478162257 is an apocalyptic number.

1478162257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1478162257 is a deficient number, since it is larger than the sum of its proper divisors (391226159).

1478162257 is a wasteful number, since it uses less digits than its factorization.

1478162257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 539 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 1478162257 is about 38446.8757768430. The cubic root of 1478162257 is about 1139.1319587306.

The spelling of 1478162257 in words is "one billion, four hundred seventy-eight million, one hundred sixty-two thousand, two hundred fifty-seven".