1791630949 has 4 divisors (see below), whose sum is σ = 1791755200. Its totient is φ = 1791506700.

The previous prime is 1791630941. The next prime is 1791630979. The reversal of 1791630949 is 9490361971.

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 1791630949 - 2³ = 1791630941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791630941) 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, 37149 + ... + 70450.

It is an arithmetic number, because the mean of its divisors is an integer number (447938800).

Almost surely, 2^1791630949 is an apocalyptic number.

It is an amenable number.

1791630949 is a deficient number, since it is larger than the sum of its proper divisors (124251).

1791630949 is a wasteful number, since it uses less digits than its factorization.

1791630949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124250.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1791630949 is about 42327.6617473727. The cubic root of 1791630949 is about 1214.5522008681.

The spelling of 1791630949 in words is "one billion, seven hundred ninety-one million, six hundred thirty thousand, nine hundred forty-nine".