1890712734 has 8 divisors (see below), whose sum is σ = 3781425480. Its totient is φ = 630237576.

The previous prime is 1890712717. The next prime is 1890712793. The reversal of 1890712734 is 4372170981.

It is a sphenic number, since it is the product of 3 distinct primes.

1890712734 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157559389 + ... + 157559400.

It is an arithmetic number, because the mean of its divisors is an integer number (472678185).

Almost surely, 2^1890712734 is an apocalyptic number.

1890712734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1890712734 is a wasteful number, since it uses less digits than its factorization.

1890712734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315118794.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1890712734 is about 43482.3266856777. The cubic root of 1890712734 is about 1236.5409873499.

The spelling of 1890712734 in words is "one billion, eight hundred ninety million, seven hundred twelve thousand, seven hundred thirty-four".