1501791949 has 4 divisors (see below), whose sum is σ = 1716333664. Its totient is φ = 1287250236.

The previous prime is 1501791937. The next prime is 1501791997. The reversal of 1501791949 is 9491971051.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9491971051 = 83 ⋅114361097.

It is a cyclic number.

It is not a de Polignac number, because 1501791949 - 2⁹ = 1501791437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1501791899 and 1501791908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501791919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107270847 + ... + 107270860.

It is an arithmetic number, because the mean of its divisors is an integer number (429083416).

Almost surely, 2^1501791949 is an apocalyptic number.

It is an amenable number.

1501791949 is a deficient number, since it is larger than the sum of its proper divisors (214541715).

1501791949 is an equidigital number, since it uses as much as digits as its factorization.

1501791949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214541714.

The product of its (nonzero) digits is 102060, while the sum is 46.

The square root of 1501791949 is about 38752.9605191655. The cubic root of 1501791949 is about 1145.1698988302.

The spelling of 1501791949 in words is "one billion, five hundred one million, seven hundred ninety-one thousand, nine hundred forty-nine".