1906329642 has 16 divisors (see below), whose sum is σ = 4357324992. Its totient is φ = 544665600.

The previous prime is 1906329637. The next prime is 1906329643. The reversal of 1906329642 is 2469236091.

It is a super-3 number, since 3×1906329642³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 45388801 = 1906329642 / (1 + 9 + 0 + 6 + 3 + 2 + 9 + 6 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1906329594 and 1906329603.

It is not an unprimeable number, because it can be changed into a prime (1906329643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22694359 + ... + 22694442.

It is an arithmetic number, because the mean of its divisors is an integer number (272332812).

Almost surely, 2^1906329642 is an apocalyptic number.

1906329642 is an abundant number, since it is smaller than the sum of its proper divisors (2450995350).

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

1906329642 is a wasteful number, since it uses less digits than its factorization.

1906329642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45388813.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 1906329642 is about 43661.5350394372. The cubic root of 1906329642 is about 1239.9361834136.

The spelling of 1906329642 in words is "one billion, nine hundred six million, three hundred twenty-nine thousand, six hundred forty-two".