155663930 has 16 divisors (see below), whose sum is σ = 281982600. Its totient is φ = 61868352.

The previous prime is 155663929. The next prime is 155663987. The reversal of 155663930 is 39366551.

It can be written as a sum of positive squares in 4 ways, for example, as 131859289 + 23804641 = 11483^2 + 4879^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48005 + ... + 51144.

Almost surely, 2^155663930 is an apocalyptic number.

155663930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155663930 is a deficient number, since it is larger than the sum of its proper divisors (126318670).

155663930 is a wasteful number, since it uses less digits than its factorization.

155663930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99313.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 155663930 is about 12476.5351760815. The cubic root of 155663930 is about 537.9344157050.

The spelling of 155663930 in words is "one hundred fifty-five million, six hundred sixty-three thousand, nine hundred thirty".