1890149225 has 12 divisors (see below), whose sum is σ = 2353130640. Its totient is φ = 1506090000.

The previous prime is 1890149171. The next prime is 1890149243. The reversal of 1890149225 is 5229410981.

It is not a de Polignac number, because 1890149225 - 2⁶ = 1890149161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144335 + ... + 156884.

It is an arithmetic number, because the mean of its divisors is an integer number (196094220).

Almost surely, 2^1890149225 is an apocalyptic number.

It is an amenable number.

1890149225 is a deficient number, since it is larger than the sum of its proper divisors (462981415).

1890149225 is a wasteful number, since it uses less digits than its factorization.

1890149225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301480 (or 301475 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 1890149225 is about 43475.8464552445. The cubic root of 1890149225 is about 1236.4181287052.

The spelling of 1890149225 in words is "one billion, eight hundred ninety million, one hundred forty-nine thousand, two hundred twenty-five".