1378534135 has 16 divisors (see below), whose sum is σ = 1826375040. Its totient is φ = 990487840.

The previous prime is 1378534109. The next prime is 1378534147. The reversal of 1378534135 is 5314358731.

It is a happy number.

It is not a de Polignac number, because 1378534135 - 2⁷ = 1378534007 is a prime.

It is a super-2 number, since 2×1378534135² = 3800712722720396450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146425 + ... + 155554.

It is an arithmetic number, because the mean of its divisors is an integer number (114148440).

Almost surely, 2^1378534135 is an apocalyptic number.

1378534135 is a deficient number, since it is larger than the sum of its proper divisors (447840905).

1378534135 is a wasteful number, since it uses less digits than its factorization.

1378534135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302078.

The product of its digits is 151200, while the sum is 40.

The square root of 1378534135 is about 37128.6161201842. The cubic root of 1378534135 is about 1112.9419387968.

The spelling of 1378534135 in words is "one billion, three hundred seventy-eight million, five hundred thirty-four thousand, one hundred thirty-five".