155163730 has 8 divisors (see below), whose sum is σ = 279294732. Its totient is φ = 62065488.

The previous prime is 155163719. The next prime is 155163731. The reversal of 155163730 is 37361551.

It can be written as a sum of positive squares in 2 ways, for example, as 147889921 + 7273809 = 12161^2 + 2697^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 155163692 and 155163701.

It is not an unprimeable number, because it can be changed into a prime (155163731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7758177 + ... + 7758196.

Almost surely, 2^155163730 is an apocalyptic number.

155163730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155163730 is a deficient number, since it is larger than the sum of its proper divisors (124131002).

155163730 is a wasteful number, since it uses less digits than its factorization.

155163730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15516380.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 155163730 is about 12456.4734174645. The cubic root of 155163730 is about 537.3576100201.

The spelling of 155163730 in words is "one hundred fifty-five million, one hundred sixty-three thousand, seven hundred thirty".