2690018158 has 4 divisors (see below), whose sum is σ = 4035027240. Its totient is φ = 1345009078.

The previous prime is 2690018117. The next prime is 2690018197. The reversal of 2690018158 is 8518100962.

2690018158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2690018158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672504538 + ... + 672504541.

It is an arithmetic number, because the mean of its divisors is an integer number (1008756810).

Almost surely, 2^2690018158 is an apocalyptic number.

2690018158 is a deficient number, since it is larger than the sum of its proper divisors (1345009082).

2690018158 is a wasteful number, since it uses less digits than its factorization.

2690018158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345009081.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 2690018158 is about 51865.3849691680. The cubic root of 2690018158 is about 1390.7585456551.

The spelling of 2690018158 in words is "two billion, six hundred ninety million, eighteen thousand, one hundred fifty-eight".