1954465977 has 8 divisors (see below), whose sum is σ = 2612146240. Its totient is φ = 1299881520.

The previous prime is 1954465973. The next prime is 1954466051. The reversal of 1954465977 is 7795644591.

It is a happy number.

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

It is not a de Polignac number, because 1954465977 - 2² = 1954465973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954465973) 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, 772477 + ... + 775002.

It is an arithmetic number, because the mean of its divisors is an integer number (326518280).

Almost surely, 2^1954465977 is an apocalyptic number.

It is an amenable number.

1954465977 is a deficient number, since it is larger than the sum of its proper divisors (657680263).

1954465977 is a wasteful number, since it uses less digits than its factorization.

1954465977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547903.

The product of its digits is 9525600, while the sum is 57.

The square root of 1954465977 is about 44209.3426438349. The cubic root of 1954465977 is about 1250.2860096471.

The spelling of 1954465977 in words is "one billion, nine hundred fifty-four million, four hundred sixty-five thousand, nine hundred seventy-seven".