3781532790 has 80 divisors (see below), whose sum is σ = 11620727712. Its totient is φ = 864349056.

The previous prime is 3781532767. The next prime is 3781532809. The reversal of 3781532790 is 972351873.

It is a happy number.

3781532790 is a `hidden beast` number, since 37 + 81 + 532 + 7 + 9 + 0 = 666.

It is a super-3 number, since 3×3781532790³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 39 ways as a sum of consecutive naturals, for example, 327799 + ... + 339138.

Almost surely, 2^3781532790 is an apocalyptic number.

3781532790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3781532790 is an abundant number, since it is smaller than the sum of its proper divisors (7839194922).

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

3781532790 is a wasteful number, since it uses less digits than its factorization.

3781532790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666963 (or 666954 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 3781532790 is about 61494.1687479390. The cubic root of 3781532790 is about 1557.9587577375.

The spelling of 3781532790 in words is "three billion, seven hundred eighty-one million, five hundred thirty-two thousand, seven hundred ninety".