1945972479 has 8 divisors (see below), whose sum is σ = 2830505472. Its totient is φ = 1179377240.

The previous prime is 1945972459. The next prime is 1945972481. The reversal of 1945972479 is 9742795491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1945972479 - 2⁹ = 1945971967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945972459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29484399 + ... + 29484464.

It is an arithmetic number, because the mean of its divisors is an integer number (353813184).

Almost surely, 2^1945972479 is an apocalyptic number.

1945972479 is a deficient number, since it is larger than the sum of its proper divisors (884532993).

1945972479 is a wasteful number, since it uses less digits than its factorization.

1945972479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58968877.

The product of its digits is 5715360, while the sum is 57.

The square root of 1945972479 is about 44113.1780650635. The cubic root of 1945972479 is about 1248.4722624283.

The spelling of 1945972479 in words is "one billion, nine hundred forty-five million, nine hundred seventy-two thousand, four hundred seventy-nine".