1938852551 has 8 divisors (see below), whose sum is σ = 2025037824. Its totient is φ = 1852824600.

The previous prime is 1938852547. The next prime is 1938852613. The reversal of 1938852551 is 1552588391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1938852551 - 2² = 1938852547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1938852496 and 1938852505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938852541) 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, 13775 + ... + 63776.

It is an arithmetic number, because the mean of its divisors is an integer number (253129728).

Almost surely, 2^1938852551 is an apocalyptic number.

1938852551 is a deficient number, since it is larger than the sum of its proper divisors (86185273).

1938852551 is a wasteful number, since it uses less digits than its factorization.

1938852551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78661.

The product of its digits is 432000, while the sum is 47.

The square root of 1938852551 is about 44032.4034206628. The cubic root of 1938852551 is about 1246.9477640306.

The spelling of 1938852551 in words is "one billion, nine hundred thirty-eight million, eight hundred fifty-two thousand, five hundred fifty-one".