1951983479 has 4 divisors (see below), whose sum is σ = 2014950720. Its totient is φ = 1889016240.

The previous prime is 1951983457. The next prime is 1951983521. The reversal of 1951983479 is 9743891591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1951983479 - 2²⁴ = 1935206263 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 (1951983419) 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 3 ways as a sum of consecutive naturals, for example, 31483574 + ... + 31483635.

It is an arithmetic number, because the mean of its divisors is an integer number (503737680).

Almost surely, 2^1951983479 is an apocalyptic number.

1951983479 is a deficient number, since it is larger than the sum of its proper divisors (62967241).

1951983479 is an equidigital number, since it uses as much as digits as its factorization.

1951983479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62967240.

The product of its digits is 2449440, while the sum is 56.

The square root of 1951983479 is about 44181.2571007209. The cubic root of 1951983479 is about 1249.7564280613.

The spelling of 1951983479 in words is "one billion, nine hundred fifty-one million, nine hundred eighty-three thousand, four hundred seventy-nine".