1048689257 has 8 divisors (see below), whose sum is σ = 1307456832. Its totient is φ = 817160400.

The previous prime is 1048689197. The next prime is 1048689277. The reversal of 1048689257 is 7529868401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1048689257 - 2²⁸ = 780253801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1048689277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6809594 + ... + 6809747.

It is an arithmetic number, because the mean of its divisors is an integer number (163432104).

Almost surely, 2^1048689257 is an apocalyptic number.

It is an amenable number.

1048689257 is a deficient number, since it is larger than the sum of its proper divisors (258767575).

1048689257 is a wasteful number, since it uses less digits than its factorization.

1048689257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13619359.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 1048689257 is about 32383.4719725974. The cubic root of 1048689257 is about 1015.9732491484.

The spelling of 1048689257 in words is "one billion, forty-eight million, six hundred eighty-nine thousand, two hundred fifty-seven".