1529661994 has 32 divisors (see below), whose sum is σ = 2764177920. Its totient is φ = 620191728.

The previous prime is 1529661983. The next prime is 1529662003. The reversal of 1529661994 is 4991669251.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205689 + ... + 212995.

It is an arithmetic number, because the mean of its divisors is an integer number (86380560).

Almost surely, 2^1529661994 is an apocalyptic number.

1529661994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1529661994 is a deficient number, since it is larger than the sum of its proper divisors (1234515926).

1529661994 is a wasteful number, since it uses less digits than its factorization.

1529661994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122.

The product of its digits is 1049760, while the sum is 52.

The square root of 1529661994 is about 39110.8935464277. The cubic root of 1529661994 is about 1152.2104916336.

The spelling of 1529661994 in words is "one billion, five hundred twenty-nine million, six hundred sixty-one thousand, nine hundred ninety-four".