1438145137 has 12 divisors (see below), whose sum is σ = 1702370740. Its totient is φ = 1206833760.

The previous prime is 1438145101. The next prime is 1438145147. The reversal of 1438145137 is 7315418341.

It can be written as a sum of positive squares in 2 ways, for example, as 451180081 + 986965056 = 21241^2 + 31416^2 .

It is not a de Polignac number, because 1438145137 - 2¹⁵ = 1438112369 is a prime.

It is a super-2 number, since 2×1438145137² = 4136522870153497538, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1438145096 and 1438145105.

It is not an unprimeable number, because it can be changed into a prime (1438145147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455562 + ... + 458707.

Almost surely, 2^1438145137 is an apocalyptic number.

It is an amenable number.

1438145137 is a deficient number, since it is larger than the sum of its proper divisors (264225603).

1438145137 is a wasteful number, since it uses less digits than its factorization.

1438145137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914304 (or 914293 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 1438145137 is about 37922.8840807236. The cubic root of 1438145137 is about 1128.7581671838.

The spelling of 1438145137 in words is "one billion, four hundred thirty-eight million, one hundred forty-five thousand, one hundred thirty-seven".