1906426158 has 128 divisors (see below), whose sum is σ = 4880891904. Its totient is φ = 482889600.

The previous prime is 1906426133. The next prime is 1906426201. The reversal of 1906426158 is 8516246091.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2758593 + ... + 2759283.

It is an arithmetic number, because the mean of its divisors is an integer number (38131968).

Almost surely, 2^1906426158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906426158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2440445952).

1906426158 is an abundant number, since it is smaller than the sum of its proper divisors (2974465746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1906426158 is a wasteful number, since it uses less digits than its factorization.

1906426158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1906426158 is about 43662.6403003758. The cubic root of 1906426158 is about 1239.9571087315.

The spelling of 1906426158 in words is "one billion, nine hundred six million, four hundred twenty-six thousand, one hundred fifty-eight".