1381453952530 has 8 divisors (see below), whose sum is σ = 2486617114572. Its totient is φ = 552581581008.

The previous prime is 1381453952509. The next prime is 1381453952603. The reversal of 1381453952530 is 352593541831.

It can be written as a sum of positive squares in 2 ways, for example, as 1202595163641 + 178858788889 = 1096629^2 + 422917^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69072697617 + ... + 69072697636.

Almost surely, 2^{1381453952530} is an apocalyptic number.

1381453952530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381453952530 is a deficient number, since it is larger than the sum of its proper divisors (1105163162042).

1381453952530 is a wasteful number, since it uses less digits than its factorization.

1381453952530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138145395260.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 1381453952530 in words is "one trillion, three hundred eighty-one billion, four hundred fifty-three million, nine hundred fifty-two thousand, five hundred thirty".