190120745 has 16 divisors (see below), whose sum is σ = 240493440. Its totient is φ = 143887104.

The previous prime is 190120729. The next prime is 190120753. The reversal of 190120745 is 547021091.

It is a cyclic number.

It is not a de Polignac number, because 190120745 - 2⁴ = 190120729 is a prime.

It is a super-2 number, since 2×190120745² = 72291795358710050, which contains 22 as substring.

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, 122444 + ... + 123986.

It is an arithmetic number, because the mean of its divisors is an integer number (15030840).

Almost surely, 2^190120745 is an apocalyptic number.

It is an amenable number.

190120745 is a deficient number, since it is larger than the sum of its proper divisors (50372695).

190120745 is a wasteful number, since it uses less digits than its factorization.

190120745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 190120745 is about 13788.4279379485. The cubic root of 190120745 is about 575.0114629095.

The spelling of 190120745 in words is "one hundred ninety million, one hundred twenty thousand, seven hundred forty-five".