2781550492 has 18 divisors (see below), whose sum is σ = 5563659192. Its totient is φ = 1191973464.

The previous prime is 2781550477. The next prime is 2781550507. The reversal of 2781550492 is 2940551872.

It is an interprime number because it is at equal distance from previous prime (2781550477) and next prime (2781550507).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 274093 + ... + 284059.

Almost surely, 2^2781550492 is an apocalyptic number.

It is an amenable number.

2781550492 is an abundant number, since it is smaller than the sum of its proper divisors (2782108700).

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

2781550492 is an frugal number, since it uses more digits than its factorization.

2781550492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19945 (or 9976 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 2781550492 is about 52740.4066347615. The cubic root of 2781550492 is about 1406.3572270184.

The spelling of 2781550492 in words is "two billion, seven hundred eighty-one million, five hundred fifty thousand, four hundred ninety-two".