1972016849 has 16 divisors (see below), whose sum is σ = 2322241920. Its totient is φ = 1655660160.

The previous prime is 1972016833. The next prime is 1972016863. The reversal of 1972016849 is 9486102791.

It is not a de Polignac number, because 1972016849 - 2⁴ = 1972016833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1972015849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127052 + ... + 141725.

It is an arithmetic number, because the mean of its divisors is an integer number (145140120).

Almost surely, 2^1972016849 is an apocalyptic number.

It is an amenable number.

1972016849 is a deficient number, since it is larger than the sum of its proper divisors (350225071).

1972016849 is a wasteful number, since it uses less digits than its factorization.

1972016849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268840.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 1972016849 is about 44407.3963321427. The cubic root of 1972016849 is about 1254.0173360969.

The spelling of 1972016849 in words is "one billion, nine hundred seventy-two million, sixteen thousand, eight hundred forty-nine".