1973429920 has 240 divisors, whose sum is σ = 5946097248. Its totient is φ = 613777920.

The previous prime is 1973429893. The next prime is 1973429929. The reversal of 1973429920 is 299243791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1973429929) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4225527 + ... + 4225993.

Almost surely, 2^1973429920 is an apocalyptic number.

1973429920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1973429920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2973048624).

1973429920 is an abundant number, since it is smaller than the sum of its proper divisors (3972667328).

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

1973429920 is an equidigital number, since it uses as much as digits as its factorization.

1973429920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1973429920 is about 44423.3037942925. The cubic root of 1973429920 is about 1254.3167913556.

The spelling of 1973429920 in words is "one billion, nine hundred seventy-three million, four hundred twenty-nine thousand, nine hundred twenty".