1954164421 has 8 divisors (see below), whose sum is σ = 2244016800. Its totient is φ = 1683012240.

The previous prime is 1954164409. The next prime is 1954164439. The reversal of 1954164421 is 1244614591.

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

It is a cyclic number.

It is not a de Polignac number, because 1954164421 - 2⁵ = 1954164389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954161421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4674826 + ... + 4675243.

It is an arithmetic number, because the mean of its divisors is an integer number (280502100).

Almost surely, 2^1954164421 is an apocalyptic number.

1954164421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1954164421 is a deficient number, since it is larger than the sum of its proper divisors (289852379).

1954164421 is a wasteful number, since it uses less digits than its factorization.

1954164421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9350099.

The product of its digits is 34560, while the sum is 37.

The square root of 1954164421 is about 44205.9319661966. The cubic root of 1954164421 is about 1250.2217038223.

It can be divided in two parts, 1954 and 164421, that added together give a cube (166375 = 55³).

The spelling of 1954164421 in words is "one billion, nine hundred fifty-four million, one hundred sixty-four thousand, four hundred twenty-one".