1954143216 has 30 divisors (see below), whose sum is σ = 5468887320. Its totient is φ = 651381024.

The previous prime is 1954143209. The next prime is 1954143223. The reversal of 1954143216 is 6123414591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1954143209) and next prime (1954143223).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6785076 + ... + 6785363.

It is an arithmetic number, because the mean of its divisors is an integer number (182296244).

Almost surely, 2^1954143216 is an apocalyptic number.

1954143216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1954143216 is an abundant number, since it is smaller than the sum of its proper divisors (3514744104).

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

1954143216 is a wasteful number, since it uses less digits than its factorization.

1954143216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13570453 (or 13570444 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1954143216 is about 44205.6921221691. The cubic root of 1954143216 is about 1250.2171816768.

The spelling of 1954143216 in words is "one billion, nine hundred fifty-four million, one hundred forty-three thousand, two hundred sixteen".