1949159158 has 4 divisors (see below), whose sum is σ = 2923738740. Its totient is φ = 974579578.

The previous prime is 1949159153. The next prime is 1949159159. The reversal of 1949159158 is 8519519491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8519519491 = 7 ⋅1217074213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949159153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487289788 + ... + 487289791.

It is an arithmetic number, because the mean of its divisors is an integer number (730934685).

Almost surely, 2^1949159158 is an apocalyptic number.

1949159158 is a deficient number, since it is larger than the sum of its proper divisors (974579582).

1949159158 is an equidigital number, since it uses as much as digits as its factorization.

1949159158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974579581.

The product of its digits is 583200, while the sum is 52.

The square root of 1949159158 is about 44149.2826442288. The cubic root of 1949159158 is about 1249.1533804244.

The spelling of 1949159158 in words is "one billion, nine hundred forty-nine million, one hundred fifty-nine thousand, one hundred fifty-eight".