1954406465 has 16 divisors (see below), whose sum is σ = 2571497280. Its totient is φ = 1414163520.

The previous prime is 1954406453. The next prime is 1954406477. The reversal of 1954406465 is 5646044591.

It is an interprime number because it is at equal distance from previous prime (1954406453) and next prime (1954406477).

It is not a de Polignac number, because 1954406465 - 2⁶ = 1954406401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79355 + ... + 101024.

It is an arithmetic number, because the mean of its divisors is an integer number (160718580).

Almost surely, 2^1954406465 is an apocalyptic number.

It is an amenable number.

1954406465 is a deficient number, since it is larger than the sum of its proper divisors (617090815).

1954406465 is a wasteful number, since it uses less digits than its factorization.

1954406465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180592.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 1954406465 is about 44208.6695683098. The cubic root of 1954406465 is about 1250.2733194328.

The spelling of 1954406465 in words is "one billion, nine hundred fifty-four million, four hundred six thousand, four hundred sixty-five".