1954508440 has 32 divisors (see below), whose sum is σ = 4400892000. Its totient is φ = 781225984.

The previous prime is 1954508419. The next prime is 1954508443. The reversal of 1954508440 is 448054591.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1954508393 and 1954508402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954508443) 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, 39021 + ... + 73699.

It is an arithmetic number, because the mean of its divisors is an integer number (137527875).

Almost surely, 2^1954508440 is an apocalyptic number.

1954508440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1954508440 is an abundant number, since it is smaller than the sum of its proper divisors (2446383560).

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

1954508440 is a wasteful number, since it uses less digits than its factorization.

1954508440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36099 (or 36095 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1954508440 is about 44209.8228903939. The cubic root of 1954508440 is about 1250.2950642109.

The spelling of 1954508440 in words is "one billion, nine hundred fifty-four million, five hundred eight thousand, four hundred forty".