1934811649 has 4 divisors (see below), whose sum is σ = 1997224960. Its totient is φ = 1872398340.

The previous prime is 1934811643. The next prime is 1934811713. The reversal of 1934811649 is 9461184391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9461184391 = 2029 ⋅4662979.

It is a cyclic number.

It is not a de Polignac number, because 1934811649 - 2⁷ = 1934811521 is a prime.

It is a super-2 number, since 2×1934811649² = 7486992234212198402, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1934811599 and 1934811608.

It is not an unprimeable number, because it can be changed into a prime (1934811643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31206609 + ... + 31206670.

It is an arithmetic number, because the mean of its divisors is an integer number (499306240).

Almost surely, 2^1934811649 is an apocalyptic number.

It is an amenable number.

1934811649 is a deficient number, since it is larger than the sum of its proper divisors (62413311).

1934811649 is an equidigital number, since it uses as much as digits as its factorization.

1934811649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62413310.

The product of its digits is 186624, while the sum is 46.

The square root of 1934811649 is about 43986.4939384807. The cubic root of 1934811649 is about 1246.0808770084.

The spelling of 1934811649 in words is "one billion, nine hundred thirty-four million, eight hundred eleven thousand, six hundred forty-nine".