1145264620 has 48 divisors (see below), whose sum is σ = 2486405376. Its totient is φ = 442656000.

The previous prime is 1145264611. The next prime is 1145264621. The reversal of 1145264620 is 264625411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (1145264621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656950 + ... + 658690.

It is an arithmetic number, because the mean of its divisors is an integer number (51800112).

Almost surely, 2^1145264620 is an apocalyptic number.

1145264620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1145264620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243202688).

1145264620 is an abundant number, since it is smaller than the sum of its proper divisors (1341140756).

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

1145264620 is a wasteful number, since it uses less digits than its factorization.

1145264620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1145264620 is about 33841.7585240484. The cubic root of 1145264620 is about 1046.2495434899.

The spelling of 1145264620 in words is "one billion, one hundred forty-five million, two hundred sixty-four thousand, six hundred twenty".