1355400549 has 24 divisors (see below), whose sum is σ = 2108780960. Its totient is φ = 836129952.

The previous prime is 1355400547. The next prime is 1355400589. The reversal of 1355400549 is 9450045531.

It is not a de Polignac number, because 1355400549 - 2¹ = 1355400547 is a prime.

It is a super-2 number, since 2×1355400549² = 3674221296459002802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355400547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84814 + ... + 99519.

Almost surely, 2^1355400549 is an apocalyptic number.

1355400549 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1355400549 is a deficient number, since it is larger than the sum of its proper divisors (753380411).

1355400549 is a wasteful number, since it uses less digits than its factorization.

1355400549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184401 (or 184398 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 1355400549 is about 36815.7649519876. The cubic root of 1355400549 is about 1106.6812511485.

The spelling of 1355400549 in words is "one billion, three hundred fifty-five million, four hundred thousand, five hundred forty-nine".