1990411145 has 16 divisors (see below), whose sum is σ = 2493873792. Its totient is φ = 1522160640.

The previous prime is 1990411127. The next prime is 1990411301. The reversal of 1990411145 is 5411140991.

It is not a de Polignac number, because 1990411145 - 2²⁰ = 1989362569 is a prime.

It is a super-2 number, since 2×1990411145² = 7923473052280422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226025 + ... + 234665.

It is an arithmetic number, because the mean of its divisors is an integer number (155867112).

Almost surely, 2^1990411145 is an apocalyptic number.

It is an amenable number.

1990411145 is a deficient number, since it is larger than the sum of its proper divisors (503462647).

1990411145 is a wasteful number, since it uses less digits than its factorization.

1990411145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10672.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1990411145 is about 44614.0240843616. The cubic root of 1990411145 is about 1257.9042900065.

The spelling of 1990411145 in words is "one billion, nine hundred ninety million, four hundred eleven thousand, one hundred forty-five".