1972441899 has 12 divisors (see below), whose sum is σ = 2918573112. Its totient is φ = 1282888800.

The previous prime is 1972441897. The next prime is 1972441943. The reversal of 1972441899 is 9981442791.

1972441899 is a `hidden beast` number, since 197 + 2 + 441 + 8 + 9 + 9 = 666.

It is not a de Polignac number, because 1972441899 - 2¹ = 1972441897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1972441897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2672317 + ... + 2673054.

It is an arithmetic number, because the mean of its divisors is an integer number (243214426).

Almost surely, 2^1972441899 is an apocalyptic number.

1972441899 is a deficient number, since it is larger than the sum of its proper divisors (946131213).

1972441899 is a wasteful number, since it uses less digits than its factorization.

1972441899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345418 (or 5345415 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 1972441899 is about 44412.1818761474. The cubic root of 1972441899 is about 1254.1074269055.

The spelling of 1972441899 in words is "one billion, nine hundred seventy-two million, four hundred forty-one thousand, eight hundred ninety-nine".