1938276197 has 16 divisors (see below), whose sum is σ = 2320109568. Its totient is φ = 1595830080.

The previous prime is 1938276181. The next prime is 1938276227. The reversal of 1938276197 is 7916728391.

It is not a de Polignac number, because 1938276197 - 2⁴ = 1938276181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938276157) 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, 120293 + ... + 135450.

It is an arithmetic number, because the mean of its divisors is an integer number (145006848).

Almost surely, 2^1938276197 is an apocalyptic number.

It is an amenable number.

1938276197 is a deficient number, since it is larger than the sum of its proper divisors (381833371).

1938276197 is a wasteful number, since it uses less digits than its factorization.

1938276197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255820.

The product of its digits is 1143072, while the sum is 53.

The square root of 1938276197 is about 44025.8582766992. The cubic root of 1938276197 is about 1246.8241935961.

The spelling of 1938276197 in words is "one billion, nine hundred thirty-eight million, two hundred seventy-six thousand, one hundred ninety-seven".