1550426740 has 12 divisors (see below), whose sum is σ = 3255896196. Its totient is φ = 620170688.

The previous prime is 1550426737. The next prime is 1550426743. The reversal of 1550426740 is 476240551.

It is an interprime number because it is at equal distance from previous prime (1550426737) and next prime (1550426743).

It can be written as a sum of positive squares in 2 ways, for example, as 206324496 + 1344102244 = 14364^2 + 36662^2 .

It is a super-2 number, since 2×1550426740² = 4807646152214055200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1550426696 and 1550426705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550426743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38760649 + ... + 38760688.

It is an arithmetic number, because the mean of its divisors is an integer number (271324683).

Almost surely, 2^1550426740 is an apocalyptic number.

1550426740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550426740 is an abundant number, since it is smaller than the sum of its proper divisors (1705469456).

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

1550426740 is a wasteful number, since it uses less digits than its factorization.

1550426740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77521346 (or 77521344 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 1550426740 is about 39375.4586005039. The cubic root of 1550426740 is about 1157.4007248007.

The spelling of 1550426740 in words is "one billion, five hundred fifty million, four hundred twenty-six thousand, seven hundred forty".