1954131420 has 24 divisors (see below), whose sum is σ = 5471568144. Its totient is φ = 521101696.

The previous prime is 1954131409. The next prime is 1954131427. The reversal of 1954131420 is 241314591.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954131427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16284369 + ... + 16284488.

It is an arithmetic number, because the mean of its divisors is an integer number (227982006).

Almost surely, 2^1954131420 is an apocalyptic number.

1954131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1954131420 is an abundant number, since it is smaller than the sum of its proper divisors (3517436724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1954131420 is a wasteful number, since it uses less digits than its factorization.

1954131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32568869 (or 32568867 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1954131420 is about 44205.5587002359. The cubic root of 1954131420 is about 1250.2146660660.

The spelling of 1954131420 in words is "one billion, nine hundred fifty-four million, one hundred thirty-one thousand, four hundred twenty".