1375541478 has 48 divisors (see below), whose sum is σ = 3010176000. Its totient is φ = 453945600.

The previous prime is 1375541477. The next prime is 1375541561. The reversal of 1375541478 is 8741455731.

1375541478 is a `hidden beast` number, since 1 + 37 + 5 + 541 + 4 + 78 = 666.

It is a super-2 number, since 2×1375541478² = 3784228715396848968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375541477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1074843 + ... + 1076121.

It is an arithmetic number, because the mean of its divisors is an integer number (62712000).

Almost surely, 2^1375541478 is an apocalyptic number.

1375541478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1375541478 is an abundant number, since it is smaller than the sum of its proper divisors (1634634522).

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

1375541478 is a wasteful number, since it uses less digits than its factorization.

1375541478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837 (or 1834 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 1375541478 is about 37088.2930046666. The cubic root of 1375541478 is about 1112.1359941633.

The spelling of 1375541478 in words is "one billion, three hundred seventy-five million, five hundred forty-one thousand, four hundred seventy-eight".