19141940 has 12 divisors (see below), whose sum is σ = 40198116. Its totient is φ = 7656768.

The previous prime is 19141939. The next prime is 19141951. The reversal of 19141940 is 4914191.

It can be written as a sum of positive squares in 2 ways, for example, as 7595536 + 11546404 = 2756^2 + 3398^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478529 + ... + 478568.

It is an arithmetic number, because the mean of its divisors is an integer number (3349843).

Almost surely, 2^19141940 is an apocalyptic number.

19141940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19141940 is an abundant number, since it is smaller than the sum of its proper divisors (21056176).

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

19141940 is a wasteful number, since it uses less digits than its factorization.

19141940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957106 (or 957104 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 19141940 is about 4375.1502831331. The cubic root of 19141940 is about 267.5029958613.

The spelling of 19141940 in words is "nineteen million, one hundred forty-one thousand, nine hundred forty".