1890306948 has 12 divisors (see below), whose sum is σ = 4410716240. Its totient is φ = 630102312.

The previous prime is 1890306947. The next prime is 1890306991. The reversal of 1890306948 is 8496030981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1890306897 and 1890306906.

It is not an unprimeable number, because it can be changed into a prime (1890306947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78762778 + ... + 78762801.

Almost surely, 2^1890306948 is an apocalyptic number.

It is an amenable number.

1890306948 is an abundant number, since it is smaller than the sum of its proper divisors (2520409292).

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

1890306948 is a wasteful number, since it uses less digits than its factorization.

1890306948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157525586 (or 157525584 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1890306948 is about 43477.6603326352. The cubic root of 1890306948 is about 1236.4525186094.

The spelling of 1890306948 in words is "one billion, eight hundred ninety million, three hundred six thousand, nine hundred forty-eight".