1629969345 has 32 divisors (see below), whose sum is σ = 2900096640. Its totient is φ = 868605120.

The previous prime is 1629969329. The next prime is 1629969371. The reversal of 1629969345 is 5439699261.

1629969345 is a `hidden beast` number, since 1 + 6 + 299 + 6 + 9 + 345 = 666.

It is not a de Polignac number, because 1629969345 - 2⁴ = 1629969329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1629969291 and 1629969300.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188415 + ... + 196875.

It is an arithmetic number, because the mean of its divisors is an integer number (90628020).

Almost surely, 2^1629969345 is an apocalyptic number.

1629969345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1629969345 is a deficient number, since it is larger than the sum of its proper divisors (1270127295).

1629969345 is a wasteful number, since it uses less digits than its factorization.

1629969345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9902 (or 9896 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 1629969345 is about 40372.8788297292. The cubic root of 1629969345 is about 1176.8645441419.

The spelling of 1629969345 in words is "one billion, six hundred twenty-nine million, nine hundred sixty-nine thousand, three hundred forty-five".