1954722961 has 4 divisors (see below), whose sum is σ = 1955404800. Its totient is φ = 1954041124.

The previous prime is 1954722953. The next prime is 1954723007. The reversal of 1954722961 is 1692274591.

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 1954722961 - 2³ = 1954722953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954722941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336601 + ... + 342358.

It is an arithmetic number, because the mean of its divisors is an integer number (488851200).

Almost surely, 2^1954722961 is an apocalyptic number.

It is an amenable number.

1954722961 is a deficient number, since it is larger than the sum of its proper divisors (681839).

1954722961 is an equidigital number, since it uses as much as digits as its factorization.

1954722961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681838.

The product of its digits is 272160, while the sum is 46.

The square root of 1954722961 is about 44212.2489927848. The cubic root of 1954722961 is about 1250.3408054196.

The spelling of 1954722961 in words is "one billion, nine hundred fifty-four million, seven hundred twenty-two thousand, nine hundred sixty-one".