1894139092 has 6 divisors (see below), whose sum is σ = 3314743418. Its totient is φ = 947069544.

The previous prime is 1894139083. The next prime is 1894139101. The reversal of 1894139092 is 2909314981.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1894139083) and next prime (1894139101).

It can be written as a sum of positive squares in only one way, i.e., 1374481476 + 519657616 = 37074^2 + 22796^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236767383 + ... + 236767390.

Almost surely, 2^1894139092 is an apocalyptic number.

It is an amenable number.

1894139092 is a deficient number, since it is larger than the sum of its proper divisors (1420604326).

1894139092 is a wasteful number, since it uses less digits than its factorization.

1894139092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473534777 (or 473534775 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 1894139092 is about 43521.7082844872. The cubic root of 1894139092 is about 1237.2874916119.

The spelling of 1894139092 in words is "one billion, eight hundred ninety-four million, one hundred thirty-nine thousand, ninety-two".