1906143892 has 12 divisors (see below), whose sum is σ = 3336202240. Its totient is φ = 952943256.

The previous prime is 1906143881. The next prime is 1906143893. The reversal of 1906143892 is 2983416091.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906143893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6253 + ... + 62059.

Almost surely, 2^1906143892 is an apocalyptic number.

It is an amenable number.

1906143892 is a deficient number, since it is larger than the sum of its proper divisors (1430058348).

1906143892 is a wasteful number, since it uses less digits than its factorization.

1906143892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64350 (or 64348 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1906143892 is about 43659.4078292411. The cubic root of 1906143892 is about 1239.8959095767.

The spelling of 1906143892 in words is "one billion, nine hundred six million, one hundred forty-three thousand, eight hundred ninety-two".