1345874550 has 48 divisors (see below), whose sum is σ = 3351160512. Its totient is φ = 357460000.

The previous prime is 1345874533. The next prime is 1345874567. The reversal of 1345874550 is 554785431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1345874533) and next prime (1345874567).

It is a super-2 number, since 2×1345874550² = 3622756608675405000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19777 + ... + 55523.

It is an arithmetic number, because the mean of its divisors is an integer number (69815844).

Almost surely, 2^1345874550 is an apocalyptic number.

1345874550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1345874550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675580256).

1345874550 is an abundant number, since it is smaller than the sum of its proper divisors (2005285962).

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

1345874550 is a wasteful number, since it uses less digits than its factorization.

1345874550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36013 (or 36008 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The square root of 1345874550 is about 36686.1629228242. The cubic root of 1345874550 is about 1104.0825017766.

The spelling of 1345874550 in words is "one billion, three hundred forty-five million, eight hundred seventy-four thousand, five hundred fifty".