1409638857 has 32 divisors (see below), whose sum is σ = 2102284800. Its totient is φ = 832782720.

The previous prime is 1409638849. The next prime is 1409638859. The reversal of 1409638857 is 7588369041.

It is not a de Polignac number, because 1409638857 - 2³ = 1409638849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1409638859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1343269 + ... + 1344317.

It is an arithmetic number, because the mean of its divisors is an integer number (65696400).

Almost surely, 2^1409638857 is an apocalyptic number.

It is an amenable number.

1409638857 is a deficient number, since it is larger than the sum of its proper divisors (692645943).

1409638857 is a wasteful number, since it uses less digits than its factorization.

1409638857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 1409638857 is about 37545.1575705843. The cubic root of 1409638857 is about 1121.2504255606.

The spelling of 1409638857 in words is "one billion, four hundred nine million, six hundred thirty-eight thousand, eight hundred fifty-seven".