1641368238 has 16 divisors (see below), whose sum is σ = 3455512320. Its totient is φ = 518326776.

The previous prime is 1641368237. The next prime is 1641368269. The reversal of 1641368238 is 8328631461.

It is a self number, because there is not a number n which added to its sum of digits gives 1641368238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641368233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7198870 + ... + 7199097.

It is an arithmetic number, because the mean of its divisors is an integer number (215969520).

Almost surely, 2^1641368238 is an apocalyptic number.

1641368238 is an abundant number, since it is smaller than the sum of its proper divisors (1814144082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641368238 is a wasteful number, since it uses less digits than its factorization.

1641368238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14397991.

The product of its digits is 165888, while the sum is 42.

The square root of 1641368238 is about 40513.8030552551. The cubic root of 1641368238 is about 1179.6015694962.

Adding to 1641368238 its reverse (8328631461), we get a palindrome (9969999699).

The spelling of 1641368238 in words is "one billion, six hundred forty-one million, three hundred sixty-eight thousand, two hundred thirty-eight".