1356838690 has 64 divisors (see below), whose sum is σ = 2586608640. Its totient is φ = 511729920.

The previous prime is 1356838687. The next prime is 1356838709. The reversal of 1356838690 is 968386531.

It is a super-2 number, since 2×1356838690² = 3682022461361832200, 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 31 ways as a sum of consecutive naturals, for example, 4419517 + ... + 4419823.

It is an arithmetic number, because the mean of its divisors is an integer number (40415760).

Almost surely, 2^1356838690 is an apocalyptic number.

1356838690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1356838690 is a deficient number, since it is larger than the sum of its proper divisors (1229769950).

1356838690 is a wasteful number, since it uses less digits than its factorization.

1356838690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 1356838690 is about 36835.2913657541. The cubic root of 1356838690 is about 1107.0725256705.

The spelling of 1356838690 in words is "one billion, three hundred fifty-six million, eight hundred thirty-eight thousand, six hundred ninety".