1770040493 has 8 divisors (see below), whose sum is σ = 2018326968. Its totient is φ = 1537772544.

The previous prime is 1770040483. The next prime is 1770040501. The reversal of 1770040493 is 3940400771.

It can be written as a sum of positive squares in 4 ways, for example, as 106461124 + 1663579369 = 10318^2 + 40787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1770040493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1770040483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4004396 + ... + 4004837.

It is an arithmetic number, because the mean of its divisors is an integer number (252290871).

Almost surely, 2^1770040493 is an apocalyptic number.

1770040493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1770040493 is a deficient number, since it is larger than the sum of its proper divisors (248286475).

1770040493 is a wasteful number, since it uses less digits than its factorization.

1770040493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009263.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 1770040493 is about 42071.8491749531. The cubic root of 1770040493 is about 1209.6537253335.

The spelling of 1770040493 in words is "one billion, seven hundred seventy million, forty thousand, four hundred ninety-three".