1378485542 has 48 divisors (see below), whose sum is σ = 2577886560. Its totient is φ = 549787392.

The previous prime is 1378485541. The next prime is 1378485547. The reversal of 1378485542 is 2455848731.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378485541) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 75134 + ... + 91662.

It is an arithmetic number, because the mean of its divisors is an integer number (53705970).

Almost surely, 2^1378485542 is an apocalyptic number.

1378485542 is a deficient number, since it is larger than the sum of its proper divisors (1199401018).

1378485542 is a wasteful number, since it uses less digits than its factorization.

1378485542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16605 (or 16598 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 1378485542 is about 37127.9617269788. The cubic root of 1378485542 is about 1112.9288616637.

The spelling of 1378485542 in words is "one billion, three hundred seventy-eight million, four hundred eighty-five thousand, five hundred forty-two".