1450138490989 has 4 divisors (see below), whose sum is σ = 1450993023324. Its totient is φ = 1449283958656.

The previous prime is 1450138490951. The next prime is 1450138491073. The reversal of 1450138490989 is 9890948310541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1407272101225 + 42866389764 = 1186285^2 + 207042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1450138490989 - 2⁷ = 1450138490861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1450138490909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427263622 + ... + 427267015.

It is an arithmetic number, because the mean of its divisors is an integer number (362748255831).

Almost surely, 2^{1450138490989} is an apocalyptic number.

It is an amenable number.

1450138490989 is a deficient number, since it is larger than the sum of its proper divisors (854532335).

1450138490989 is an equidigital number, since it uses as much as digits as its factorization.

1450138490989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854532334.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 1450138490989 in words is "one trillion, four hundred fifty billion, one hundred thirty-eight million, four hundred ninety thousand, nine hundred eighty-nine".