1921293 has 16 divisors (see below), whose sum is σ = 3105600. Its totient is φ = 1164240.

The previous prime is 1921277. The next prime is 1921307. The reversal of 1921293 is 3921291.

It is not a de Polignac number, because 1921293 - 2⁴ = 1921277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921253) 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, 2938 + ... + 3531.

It is an arithmetic number, because the mean of its divisors is an integer number (194100).

2^1921293 is an apocalyptic number.

It is an amenable number.

1921293 is a deficient number, since it is larger than the sum of its proper divisors (1184307).

1921293 is a wasteful number, since it uses less digits than its factorization.

1921293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489 (or 6483 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1921293 is about 1386.1071387162. The cubic root of 1921293 is about 124.3171943360.

It can be divided in two parts, 192 and 1293, that added together give a triangular number (1485 = T₅₄).

The spelling of 1921293 in words is "one million, nine hundred twenty-one thousand, two hundred ninety-three".