1929021141 has 16 divisors (see below), whose sum is σ = 2628172800. Its totient is φ = 1257971568.

The previous prime is 1929021077. The next prime is 1929021169. The reversal of 1929021141 is 1411209291.

It is a happy number.

It is not a de Polignac number, because 1929021141 - 2⁶ = 1929021077 is a prime.

It is a super-2 number, since 2×1929021141² = 7442245124849883762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1929021099 and 1929021108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1929021541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514050 + ... + 517788.

It is an arithmetic number, because the mean of its divisors is an integer number (164260800).

Almost surely, 2^1929021141 is an apocalyptic number.

It is an amenable number.

1929021141 is a deficient number, since it is larger than the sum of its proper divisors (699151659).

1929021141 is a wasteful number, since it uses less digits than its factorization.

1929021141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7448.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1929021141 is about 43920.6231854695. The cubic root of 1929021141 is about 1244.8365437574.

The spelling of 1929021141 in words is "one billion, nine hundred twenty-nine million, twenty-one thousand, one hundred forty-one".