1491498351 has 12 divisors (see below), whose sum is σ = 2462156112. Its totient is φ = 852284736.

The previous prime is 1491498311. The next prime is 1491498353. The reversal of 1491498351 is 1538941941.

It is not a de Polignac number, because 1491498351 - 2¹⁴ = 1491481967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491498297 and 1491498306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491498353) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11837226 + ... + 11837351.

It is an arithmetic number, because the mean of its divisors is an integer number (205179676).

Almost surely, 2^1491498351 is an apocalyptic number.

1491498351 is a deficient number, since it is larger than the sum of its proper divisors (970657761).

1491498351 is a wasteful number, since it uses less digits than its factorization.

1491498351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23674590 (or 23674587 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1491498351 is about 38619.9216855757. The cubic root of 1491498351 is about 1142.5474863392.

The spelling of 1491498351 in words is "one billion, four hundred ninety-one million, four hundred ninety-eight thousand, three hundred fifty-one".