1438142692 has 12 divisors (see below), whose sum is σ = 2876285440. Its totient is φ = 616346856.

The previous prime is 1438142687. The next prime is 1438142729. The reversal of 1438142692 is 2962418341.

1438142692 is an admirable number.

It is a super-3 number, since 3×1438142692³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 25681092 + ... + 25681147.

Almost surely, 2^1438142692 is an apocalyptic number.

It is an amenable number.

1438142692 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.

1438142692 is a wasteful number, since it uses less digits than its factorization.

1438142692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51362250 (or 51362248 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 1438142692 is about 37922.8518442377. The cubic root of 1438142692 is about 1128.7575275137.

The spelling of 1438142692 in words is "one billion, four hundred thirty-eight million, one hundred forty-two thousand, six hundred ninety-two".