1985199629 has 8 divisors (see below), whose sum is σ = 2388210240. Its totient is φ = 1612041696.

The previous prime is 1985199617. The next prime is 1985199631. The reversal of 1985199629 is 9269915891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1985199629 - 2⁴ = 1985199613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985199659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7463024 + ... + 7463289.

It is an arithmetic number, because the mean of its divisors is an integer number (298526280).

Almost surely, 2^1985199629 is an apocalyptic number.

1985199629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1985199629 is a deficient number, since it is larger than the sum of its proper divisors (403010611).

1985199629 is a wasteful number, since it uses less digits than its factorization.

1985199629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14926339.

The product of its digits is 3149280, while the sum is 59.

The square root of 1985199629 is about 44555.5791007142. The cubic root of 1985199629 is about 1256.8054687552.

The spelling of 1985199629 in words is "one billion, nine hundred eighty-five million, one hundred ninety-nine thousand, six hundred twenty-nine".