1929290137 has 4 divisors (see below), whose sum is σ = 1976346036. Its totient is φ = 1882234240.

The previous prime is 1929290131. The next prime is 1929290161. The reversal of 1929290137 is 7310929291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222278281 + 1707011856 = 14909^2 + 41316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1929290137 - 2¹¹ = 1929288089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1929290093 and 1929290102.

It is not an unprimeable number, because it can be changed into a prime (1929290131) 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, 23527888 + ... + 23527969.

It is an arithmetic number, because the mean of its divisors is an integer number (494086509).

Almost surely, 2^1929290137 is an apocalyptic number.

It is an amenable number.

1929290137 is a deficient number, since it is larger than the sum of its proper divisors (47055899).

1929290137 is an equidigital number, since it uses as much as digits as its factorization.

1929290137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47055898.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1929290137 is about 43923.6853758880. The cubic root of 1929290137 is about 1244.8944039298.

The spelling of 1929290137 in words is "one billion, nine hundred twenty-nine million, two hundred ninety thousand, one hundred thirty-seven".