1381507634 has 16 divisors (see below), whose sum is σ = 2263101120. Its totient is φ = 628637520.

The previous prime is 1381507541. The next prime is 1381507643. The reversal of 1381507634 is 4367051831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372344 + ... + 376035.

It is an arithmetic number, because the mean of its divisors is an integer number (141443820).

Almost surely, 2^1381507634 is an apocalyptic number.

1381507634 is a deficient number, since it is larger than the sum of its proper divisors (881593486).

1381507634 is a wasteful number, since it uses less digits than its factorization.

1381507634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748465.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1381507634 is about 37168.6377743387. The cubic root of 1381507634 is about 1113.7415696257.

The spelling of 1381507634 in words is "one billion, three hundred eighty-one million, five hundred seven thousand, six hundred thirty-four".