1954344961 has 4 divisors (see below), whose sum is σ = 1969733632. Its totient is φ = 1938956292.

The previous prime is 1954344919. The next prime is 1954344967. The reversal of 1954344961 is 1694434591.

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 1954344961 - 2¹⁵ = 1954312193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954344967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7694145 + ... + 7694398.

It is an arithmetic number, because the mean of its divisors is an integer number (492433408).

Almost surely, 2^1954344961 is an apocalyptic number.

It is an amenable number.

1954344961 is a deficient number, since it is larger than the sum of its proper divisors (15388671).

1954344961 is a wasteful number, since it uses less digits than its factorization.

1954344961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388670.

The product of its digits is 466560, while the sum is 46.

The square root of 1954344961 is about 44207.9739526706. The cubic root of 1954344961 is about 1250.2602041779.

The spelling of 1954344961 in words is "one billion, nine hundred fifty-four million, three hundred forty-four thousand, nine hundred sixty-one".