1920069 has 12 divisors (see below), whose sum is σ = 2786316. Its totient is φ = 1274112.

The previous prime is 1920049. The next prime is 1920089. The reversal of 1920069 is 9600291.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1920049) and next prime (1920089).

It can be written as a sum of positive squares in 2 ways, for example, as 324900 + 1595169 = 570^2 + 1263^2 .

It is not a de Polignac number, because 1920069 - 2¹⁹ = 1395781 is a prime.

It is a super-3 number, since 3×1920069³ = 21235953336671065527, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2517 + ... + 3189.

It is an arithmetic number, because the mean of its divisors is an integer number (232193).

2^1920069 is an apocalyptic number.

It is an amenable number.

1920069 is a deficient number, since it is larger than the sum of its proper divisors (866247).

1920069 is a wasteful number, since it uses less digits than its factorization.

1920069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1920069 is about 1385.6655440618. The cubic root of 1920069 is about 124.2907891026.

The spelling of 1920069 in words is "one million, nine hundred twenty thousand, sixty-nine".