1906236642 has 64 divisors (see below), whose sum is σ = 4129678080. Its totient is φ = 584795904.

The previous prime is 1906236601. The next prime is 1906236653. The reversal of 1906236642 is 2466326091.

It is a self number, because there is not a number n which added to its sum of digits gives 1906236642.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1492108 + ... + 1493384.

It is an arithmetic number, because the mean of its divisors is an integer number (64526220).

Almost surely, 2^1906236642 is an apocalyptic number.

1906236642 is an abundant number, since it is smaller than the sum of its proper divisors (2223441438).

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

1906236642 is a wasteful number, since it uses less digits than its factorization.

1906236642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 1906236642 is about 43660.4700157935. The cubic root of 1906236642 is about 1239.9160197200.

The spelling of 1906236642 in words is "one billion, nine hundred six million, two hundred thirty-six thousand, six hundred forty-two".