1853454137 has 4 divisors (see below), whose sum is σ = 1869856500. Its totient is φ = 1837051776.

The previous prime is 1853454101. The next prime is 1853454139. The reversal of 1853454137 is 7314543581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7314543581 = 1433 ⋅5104357.

It can be written as a sum of positive squares in 2 ways, for example, as 29822521 + 1823631616 = 5461^2 + 42704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1853454137 - 2¹⁸ = 1853191993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1853454094 and 1853454103.

It is not an unprimeable number, because it can be changed into a prime (1853454139) 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, 8201012 + ... + 8201237.

It is an arithmetic number, because the mean of its divisors is an integer number (467464125).

Almost surely, 2^1853454137 is an apocalyptic number.

It is an amenable number.

1853454137 is a deficient number, since it is larger than the sum of its proper divisors (16402363).

1853454137 is a wasteful number, since it uses less digits than its factorization.

1853454137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16402362.

The product of its digits is 201600, while the sum is 41.

The square root of 1853454137 is about 43051.7611370313. The cubic root of 1853454137 is about 1228.3645695859.

The spelling of 1853454137 in words is "one billion, eight hundred fifty-three million, four hundred fifty-four thousand, one hundred thirty-seven".