1387429770 has 32 divisors (see below), whose sum is σ = 3343665600. Its totient is φ = 368444160.

The previous prime is 1387429733. The next prime is 1387429793. The reversal of 1387429770 is 779247831.

It is a super-2 number, since 2×1387429770² = 3849922733364505800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88720 + ... + 103179.

It is an arithmetic number, because the mean of its divisors is an integer number (104489550).

Almost surely, 2^1387429770 is an apocalyptic number.

1387429770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387429770 is an abundant number, since it is smaller than the sum of its proper divisors (1956235830).

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

1387429770 is a wasteful number, since it uses less digits than its factorization.

1387429770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192150.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 1387429770 is about 37248.2183466538. The cubic root of 1387429770 is about 1115.3307336623.

The spelling of 1387429770 in words is "one billion, three hundred eighty-seven million, four hundred twenty-nine thousand, seven hundred seventy".