1408694650 has 24 divisors (see below), whose sum is σ = 2858370624. Its totient is φ = 512252400.

The previous prime is 1408694611. The next prime is 1408694659. The reversal of 1408694650 is 564968041.

It is a junction number, because it is equal to n+sod(n) for n = 1408694597 and 1408694606.

It is not an unprimeable number, because it can be changed into a prime (1408694659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1280082 + ... + 1281181.

It is an arithmetic number, because the mean of its divisors is an integer number (119098776).

Almost surely, 2^1408694650 is an apocalyptic number.

1408694650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1408694650 is an abundant number, since it is smaller than the sum of its proper divisors (1449675974).

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

1408694650 is a wasteful number, since it uses less digits than its factorization.

1408694650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561286 (or 2561281 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1408694650 is about 37532.5811795565. The cubic root of 1408694650 is about 1121.0000236079. Note that the first 4 decimals are identical.

The spelling of 1408694650 in words is "one billion, four hundred eight million, six hundred ninety-four thousand, six hundred fifty".