1491725298 has 32 divisors (see below), whose sum is σ = 3488956416. Its totient is φ = 416294928.

The previous prime is 1491725251. The next prime is 1491725303. The reversal of 1491725298 is 8925271941.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 411186 + ... + 414797.

It is an arithmetic number, because the mean of its divisors is an integer number (109029888).

Almost surely, 2^1491725298 is an apocalyptic number.

1491725298 is an abundant number, since it is smaller than the sum of its proper divisors (1997231118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491725298 is a wasteful number, since it uses less digits than its factorization.

1491725298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826038.

The product of its digits is 362880, while the sum is 48.

The square root of 1491725298 is about 38622.8597853655. The cubic root of 1491725298 is about 1142.6054335647.

The spelling of 1491725298 in words is "one billion, four hundred ninety-one million, seven hundred twenty-five thousand, two hundred ninety-eight".