158228730394 has 16 divisors (see below), whose sum is σ = 271589609088. Its totient is φ = 67727223792.

The previous prime is 158228730377. The next prime is 158228730397. The reversal of 158228730394 is 493037822851.

It is a happy number.

It is a super-2 number, since 2×158228730394² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158228730397) 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, 7079214 + ... + 7101529.

It is an arithmetic number, because the mean of its divisors is an integer number (16974350568).

Almost surely, 2^158228730394 is an apocalyptic number.

158228730394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

158228730394 is a deficient number, since it is larger than the sum of its proper divisors (113360878694).

158228730394 is a wasteful number, since it uses less digits than its factorization.

158228730394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14181549.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 158228730394 in words is "one hundred fifty-eight billion, two hundred twenty-eight million, seven hundred thirty thousand, three hundred ninety-four".