1138901692 has 6 divisors (see below), whose sum is σ = 1993077968. Its totient is φ = 569450844.

The previous prime is 1138901671. The next prime is 1138901693. The reversal of 1138901692 is 2961098311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138901693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142362708 + ... + 142362715.

Almost surely, 2^1138901692 is an apocalyptic number.

It is an amenable number.

1138901692 is a deficient number, since it is larger than the sum of its proper divisors (854176276).

1138901692 is a wasteful number, since it uses less digits than its factorization.

1138901692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284725427 (or 284725425 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1138901692 is about 33747.6175751711. The cubic root of 1138901692 is about 1044.3083392669.

The spelling of 1138901692 in words is "one billion, one hundred thirty-eight million, nine hundred one thousand, six hundred ninety-two".