1445375274 has 64 divisors (see below), whose sum is σ = 3369600000. Its totient is φ = 404771328.

The previous prime is 1445375273. The next prime is 1445375287. The reversal of 1445375274 is 4725735441.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1445375273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1156602 + ... + 1157850.

It is an arithmetic number, because the mean of its divisors is an integer number (52650000).

Almost surely, 2^1445375274 is an apocalyptic number.

1445375274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445375274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684800000).

1445375274 is an abundant number, since it is smaller than the sum of its proper divisors (1924224726).

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

1445375274 is a wasteful number, since it uses less digits than its factorization.

1445375274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787.

The product of its digits is 470400, while the sum is 42.

The square root of 1445375274 is about 38018.0914039619. The cubic root of 1445375274 is about 1130.6465806469.

The spelling of 1445375274 in words is "one billion, four hundred forty-five million, three hundred seventy-five thousand, two hundred seventy-four".