158397783 has 4 divisors (see below), whose sum is σ = 211197048. Its totient is φ = 105598520.

The previous prime is 158397779. The next prime is 158397787. The reversal of 158397783 is 387793851.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (158397779) and next prime (158397787).

It is a cyclic number.

It is not a de Polignac number, because 158397783 - 2² = 158397779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158397787) 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, 26399628 + ... + 26399633.

It is an arithmetic number, because the mean of its divisors is an integer number (52799262).

Almost surely, 2^158397783 is an apocalyptic number.

158397783 is a deficient number, since it is larger than the sum of its proper divisors (52799265).

158397783 is an equidigital number, since it uses as much as digits as its factorization.

158397783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52799264.

The product of its digits is 1270080, while the sum is 51.

The square root of 158397783 is about 12585.6181016270. The cubic root of 158397783 is about 541.0653214872.

The spelling of 158397783 in words is "one hundred fifty-eight million, three hundred ninety-seven thousand, seven hundred eighty-three".