1810329949 has 16 divisors (see below), whose sum is σ = 1966083840. Its totient is φ = 1660157440.

The previous prime is 1810329907. The next prime is 1810329953. The reversal of 1810329949 is 9499230181.

It is a happy number.

It is not a de Polignac number, because 1810329949 - 2¹¹ = 1810327901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1810329899 and 1810329908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810329349) 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, 876492 + ... + 878554.

It is an arithmetic number, because the mean of its divisors is an integer number (122880240).

Almost surely, 2^1810329949 is an apocalyptic number.

It is an amenable number.

1810329949 is a deficient number, since it is larger than the sum of its proper divisors (155753891).

1810329949 is a wasteful number, since it uses less digits than its factorization.

1810329949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 1810329949 is about 42547.9723253647. The cubic root of 1810329949 is about 1218.7629557632.

The spelling of 1810329949 in words is "one billion, eight hundred ten million, three hundred twenty-nine thousand, nine hundred forty-nine".