1457978899 has 4 divisors (see below), whose sum is σ = 1570131136. Its totient is φ = 1345826664.

The previous prime is 1457978867. The next prime is 1457978903. The reversal of 1457978899 is 9988797541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1457978899 - 2⁵ = 1457978867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1457978299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56076099 + ... + 56076124.

It is an arithmetic number, because the mean of its divisors is an integer number (392532784).

Almost surely, 2^1457978899 is an apocalyptic number.

1457978899 is a deficient number, since it is larger than the sum of its proper divisors (112152237).

1457978899 is a wasteful number, since it uses less digits than its factorization.

1457978899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112152236.

The product of its digits is 45722880, while the sum is 67.

The square root of 1457978899 is about 38183.4898745518. The cubic root of 1457978899 is about 1133.9234745921.

The spelling of 1457978899 in words is "one billion, four hundred fifty-seven million, nine hundred seventy-eight thousand, eight hundred ninety-nine".