1499742641 has 4 divisors (see below), whose sum is σ = 1501046784. Its totient is φ = 1498438500.

The previous prime is 1499742631. The next prime is 1499742677. The reversal of 1499742641 is 1462479941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1499742641 - 2¹⁴ = 1499726257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1499742611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650345 + ... + 652646.

It is an arithmetic number, because the mean of its divisors is an integer number (375261696).

Almost surely, 2^1499742641 is an apocalyptic number.

It is an amenable number.

1499742641 is a deficient number, since it is larger than the sum of its proper divisors (1304143).

1499742641 is a wasteful number, since it uses less digits than its factorization.

1499742641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304142.

The product of its digits is 435456, while the sum is 47.

The square root of 1499742641 is about 38726.5108291465. The cubic root of 1499742641 is about 1144.6487715838.

The spelling of 1499742641 in words is "one billion, four hundred ninety-nine million, seven hundred forty-two thousand, six hundred forty-one".