1613786380 has 24 divisors (see below), whose sum is σ = 3414826800. Its totient is φ = 640585920.

The previous prime is 1613786351. The next prime is 1613786393. The reversal of 1613786380 is 836873161.

It is a super-3 number, since 3×1613786380³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305355 + ... + 310594.

It is an arithmetic number, because the mean of its divisors is an integer number (142284450).

Almost surely, 2^1613786380 is an apocalyptic number.

1613786380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1613786380 is an abundant number, since it is smaller than the sum of its proper divisors (1801040420).

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

1613786380 is a wasteful number, since it uses less digits than its factorization.

1613786380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616089 (or 616087 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1613786380 is about 40171.9601214579. The cubic root of 1613786380 is about 1172.9567943867.

The spelling of 1613786380 in words is "one billion, six hundred thirteen million, seven hundred eighty-six thousand, three hundred eighty".