1629740166 has 12 divisors (see below), whose sum is σ = 3259678116. Its totient is φ = 543213760.

The previous prime is 1629740149. The next prime is 1629740191. The reversal of 1629740166 is 6610479261.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90646 + ... + 107126.

It is an arithmetic number, because the mean of its divisors is an integer number (271639843).

Almost surely, 2^1629740166 is an apocalyptic number.

1629740166 is an abundant number, since it is smaller than the sum of its proper divisors (1629937950).

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

1629740166 is an frugal number, since it uses more digits than its factorization.

1629740166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32967 (or 16486 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1629740166 is about 40370.0404508096. The cubic root of 1629740166 is about 1176.8093845603.

The spelling of 1629740166 in words is "one billion, six hundred twenty-nine million, seven hundred forty thousand, one hundred sixty-six".