1488495891 has 8 divisors (see below), whose sum is σ = 2089117120. Its totient is φ = 940102632.

The previous prime is 1488495887. The next prime is 1488495893. The reversal of 1488495891 is 1985948841.

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

It is not a de Polignac number, because 1488495891 - 2² = 1488495887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 26113963 = 1488495891 / (1 + 4 + 8 + 8 + 4 + 9 + 5 + 8 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1488495893) 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, 13056925 + ... + 13057038.

It is an arithmetic number, because the mean of its divisors is an integer number (261139640).

Almost surely, 2^1488495891 is an apocalyptic number.

1488495891 is a deficient number, since it is larger than the sum of its proper divisors (600621229).

1488495891 is a wasteful number, since it uses less digits than its factorization.

1488495891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26113985.

The product of its digits is 3317760, while the sum is 57.

The square root of 1488495891 is about 38581.0301961988. The cubic root of 1488495891 is about 1141.7803031032.

The spelling of 1488495891 in words is "one billion, four hundred eighty-eight million, four hundred ninety-five thousand, eight hundred ninety-one".