1771913603490 has 128 divisors (see below), whose sum is σ = 4746608916480. Its totient is φ = 420698188800.

The previous prime is 1771913603479. The next prime is 1771913603503. The reversal of 1771913603490 is 943063191771.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6563475 + ... + 6828105.

It is an arithmetic number, because the mean of its divisors is an integer number (37082882160).

Almost surely, 2^{1771913603490} is an apocalyptic number.

1771913603490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1771913603490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373304458240).

1771913603490 is an abundant number, since it is smaller than the sum of its proper divisors (2974695312990).

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

1771913603490 is a wasteful number, since it uses less digits than its factorization.

1771913603490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265368.

The product of its (nonzero) digits is 857304, while the sum is 51.

The spelling of 1771913603490 in words is "one trillion, seven hundred seventy-one billion, nine hundred thirteen million, six hundred three thousand, four hundred ninety".