1288749364 has 24 divisors (see below), whose sum is σ = 2594576768. Its totient is φ = 548661600.

The previous prime is 1288749361. The next prime is 1288749367. The reversal of 1288749364 is 4639478821.

It is an interprime number because it is at equal distance from previous prime (1288749361) and next prime (1288749367).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288749361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148179 + ... + 156634.

Almost surely, 2^1288749364 is an apocalyptic number.

1288749364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1288749364 is an abundant number, since it is smaller than the sum of its proper divisors (1305827404).

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

1288749364 is a wasteful number, since it uses less digits than its factorization.

1288749364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304975 (or 304973 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 1288749364 is about 35899.1554775318. The cubic root of 1288749364 is about 1088.2353299435.

The spelling of 1288749364 in words is "one billion, two hundred eighty-eight million, seven hundred forty-nine thousand, three hundred sixty-four".