1450171690 has 48 divisors (see below), whose sum is σ = 2923447464. Its totient is φ = 517362560.

The previous prime is 1450171649. The next prime is 1450171691. The reversal of 1450171690 is 961710541.

It can be written as a sum of positive squares in 4 ways, for example, as 1249127649 + 201044041 = 35343^2 + 14179^2 .

It is a super-2 number, since 2×1450171690² = 4205995860954912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1450171691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52824 + ... + 75436.

Almost surely, 2^1450171690 is an apocalyptic number.

1450171690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1450171690 is an abundant number, since it is smaller than the sum of its proper divisors (1473275774).

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

1450171690 is a wasteful number, since it uses less digits than its factorization.

1450171690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22695 (or 22684 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 1450171690 is about 38081.1198627351. The cubic root of 1450171690 is about 1131.8958671957.

It can be divided in two parts, 145017 and 1690, that multiplied together give a triangular number (245078730 = T₂₂₁₃₉).

The spelling of 1450171690 in words is "one billion, four hundred fifty million, one hundred seventy-one thousand, six hundred ninety".