1386129740 has 12 divisors (see below), whose sum is σ = 2910872496. Its totient is φ = 554451888.

The previous prime is 1386129713. The next prime is 1386129751. The reversal of 1386129740 is 479216831.

It is a super-2 number, since 2×1386129740² = 3842711312224935200, which contains 22 as substring.

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, 34653224 + ... + 34653263.

It is an arithmetic number, because the mean of its divisors is an integer number (242572708).

Almost surely, 2^1386129740 is an apocalyptic number.

1386129740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386129740 is an abundant number, since it is smaller than the sum of its proper divisors (1524742756).

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

1386129740 is a wasteful number, since it uses less digits than its factorization.

1386129740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69306496 (or 69306494 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1386129740 is about 37230.7633550536. The cubic root of 1386129740 is about 1114.9822676100.

The spelling of 1386129740 in words is "one billion, three hundred eighty-six million, one hundred twenty-nine thousand, seven hundred forty".