1943949158 has 16 divisors (see below), whose sum is σ = 2974736016. Its totient is φ = 952417440.

The previous prime is 1943949157. The next prime is 1943949191. The reversal of 1943949158 is 8519493491.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1943949157) 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, 74660 + ... + 97272.

It is an arithmetic number, because the mean of its divisors is an integer number (185921001).

Almost surely, 2^1943949158 is an apocalyptic number.

1943949158 is a deficient number, since it is larger than the sum of its proper divisors (1030786858).

1943949158 is a wasteful number, since it uses less digits than its factorization.

1943949158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23479.

The product of its digits is 1399680, while the sum is 53.

The square root of 1943949158 is about 44090.2388063390. The cubic root of 1943949158 is about 1248.0394135283.

The spelling of 1943949158 in words is "one billion, nine hundred forty-three million, nine hundred forty-nine thousand, one hundred fifty-eight".