1990929354 has 16 divisors (see below), whose sum is σ = 4012256160. Its totient is φ = 658576880.

The previous prime is 1990929341. The next prime is 1990929361. The reversal of 1990929354 is 4539290991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1990929297 and 1990929306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1265709 + ... + 1267280.

It is an arithmetic number, because the mean of its divisors is an integer number (250766010).

Almost surely, 2^1990929354 is an apocalyptic number.

1990929354 is an abundant number, since it is smaller than the sum of its proper divisors (2021326806).

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

1990929354 is a wasteful number, since it uses less digits than its factorization.

1990929354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533125.

The product of its (nonzero) digits is 787320, while the sum is 51.

The square root of 1990929354 is about 44619.8313981575. The cubic root of 1990929354 is about 1258.0134468111.

The spelling of 1990929354 in words is "one billion, nine hundred ninety million, nine hundred twenty-nine thousand, three hundred fifty-four".