1372209380 has 24 divisors (see below), whose sum is σ = 2959523448. Its totient is φ = 534048768.

The previous prime is 1372209367. The next prime is 1372209427. The reversal of 1372209380 is 839022731.

It can be written as a sum of positive squares in 4 ways, for example, as 148888804 + 1223320576 = 12202^2 + 34976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1372209380.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926429 + ... + 927908.

It is an arithmetic number, because the mean of its divisors is an integer number (123313477).

Almost surely, 2^1372209380 is an apocalyptic number.

1372209380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1372209380 is an abundant number, since it is smaller than the sum of its proper divisors (1587314068).

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

1372209380 is a wasteful number, since it uses less digits than its factorization.

1372209380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854383 (or 1854381 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1372209380 is about 37043.3446114143. The cubic root of 1372209380 is about 1111.2372590182.

The spelling of 1372209380 in words is "one billion, three hundred seventy-two million, two hundred nine thousand, three hundred eighty".