1790051481 has 21 divisors (see below), whose sum is σ = 2685563301. Its totient is φ = 1192606092.

The previous prime is 1790051467. The next prime is 1790051491. The reversal of 1790051481 is 1841500971.

The square root of 1790051481 is 42309.

It is a perfect power (a square), and thus also a powerful number.

1790051481 is a `hidden beast` number, since 179 + 0 + 0 + 5 + 1 + 481 = 666.

It is not a de Polignac number, because 1790051481 - 2¹³ = 1790043289 is a prime.

It is a super-2 number, since 2×1790051481² = 6408568609260586722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1790051491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1141560 + ... + 1143126.

Almost surely, 2^1790051481 is an apocalyptic number.

1790051481 is the 42309-th square number.

1790051481 is the 21155-th centered octagonal number.

It is an amenable number.

1790051481 is a deficient number, since it is larger than the sum of its proper divisors (895511820).

1790051481 is an frugal number, since it uses more digits than its factorization.

1790051481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The cubic root of 1790051481 is about 1214.1951871764.

Multiplying 1790051481 by its sum of digits (36), we get a square (64441853316 = 253854²).

The spelling of 1790051481 in words is "one billion, seven hundred ninety million, fifty-one thousand, four hundred eighty-one".