1380736842 has 16 divisors (see below), whose sum is σ = 2767521792. Its totient is φ = 459237600.

The previous prime is 1380736823. The next prime is 1380736849. The reversal of 1380736842 is 2486370831.

It is a super-2 number, since 2×1380736842² = 3812868453712265928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1380736794 and 1380736803.

It is not an unprimeable number, because it can be changed into a prime (1380736849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249034 + ... + 254517.

It is an arithmetic number, because the mean of its divisors is an integer number (172970112).

Almost surely, 2^1380736842 is an apocalyptic number.

1380736842 is an abundant number, since it is smaller than the sum of its proper divisors (1386784950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1380736842 is a wasteful number, since it uses less digits than its factorization.

1380736842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504013.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 1380736842 is about 37158.2674784495. The cubic root of 1380736842 is about 1113.5343991461.

The spelling of 1380736842 in words is "one billion, three hundred eighty million, seven hundred thirty-six thousand, eight hundred forty-two".