1934186641 has 4 divisors (see below), whose sum is σ = 1934330992. Its totient is φ = 1934042292.

The previous prime is 1934186621. The next prime is 1934186647. The reversal of 1934186641 is 1466814391.

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: 1466814391 = 7 ⋅209544913.

It is a cyclic number.

It is not a de Polignac number, because 1934186641 - 2⁹ = 1934186129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1934186647) 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, 49755 + ... + 79648.

It is an arithmetic number, because the mean of its divisors is an integer number (483582748).

Almost surely, 2^1934186641 is an apocalyptic number.

It is an amenable number.

1934186641 is a deficient number, since it is larger than the sum of its proper divisors (144351).

1934186641 is a wasteful number, since it uses less digits than its factorization.

1934186641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144350.

The product of its digits is 124416, while the sum is 43.

The square root of 1934186641 is about 43979.3888202190. The cubic root of 1934186641 is about 1245.9466874793.

The spelling of 1934186641 in words is "one billion, nine hundred thirty-four million, one hundred eighty-six thousand, six hundred forty-one".