1381538654 has 8 divisors (see below), whose sum is σ = 2162408400. Its totient is φ = 660735856.

The previous prime is 1381538629. The next prime is 1381538689. The reversal of 1381538654 is 4568351831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1381538654² = 3817298104992263432, 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 3 ways as a sum of consecutive naturals, for example, 15016679 + ... + 15016770.

It is an arithmetic number, because the mean of its divisors is an integer number (270301050).

Almost surely, 2^1381538654 is an apocalyptic number.

1381538654 is a deficient number, since it is larger than the sum of its proper divisors (780869746).

1381538654 is a wasteful number, since it uses less digits than its factorization.

1381538654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30033474.

The product of its digits is 345600, while the sum is 44.

The square root of 1381538654 is about 37169.0550592828. The cubic root of 1381538654 is about 1113.7499054476.

The spelling of 1381538654 in words is "one billion, three hundred eighty-one million, five hundred thirty-eight thousand, six hundred fifty-four".