1491461859 has 8 divisors (see below), whose sum is σ = 1994890320. Its totient is φ = 991170656.

The previous prime is 1491461843. The next prime is 1491461861. The reversal of 1491461859 is 9581641941.

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

It is a cyclic number.

It is not a de Polignac number, because 1491461859 - 2⁴ = 1491461843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1491461809) 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, 783204 + ... + 785105.

It is an arithmetic number, because the mean of its divisors is an integer number (249361290).

Almost surely, 2^1491461859 is an apocalyptic number.

1491461859 is a deficient number, since it is larger than the sum of its proper divisors (503428461).

1491461859 is a wasteful number, since it uses less digits than its factorization.

1491461859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568629.

The product of its digits is 311040, while the sum is 48.

The square root of 1491461859 is about 38619.4492322198. The cubic root of 1491461859 is about 1142.5381681519.

The spelling of 1491461859 in words is "one billion, four hundred ninety-one million, four hundred sixty-one thousand, eight hundred fifty-nine".